TL;DR — How To Get Rid of Roaches in Your Kitchen
- Clean first — roaches won’t take bait if real food is available
- Spray cracks and crevices with the included Doxem NXT aerosol — no mixing, no sprayer needed
- Apply Maxforce bait using the cut straw method in cabinets, drawers, behind appliances, and inside outlet voids
- Set monitoring traps along walls and behind the refrigerator to track and confirm elimination
- Treat the bathroom too — roaches follow moisture and may already be headed there
- Retreat after 7 days if activity continues — the kit has enough product for follow-up treatments
- Store leftovers in a cool dry cabinet between 60-80 degrees for future use
Finding a roach in your kitchen is one of those moments that stops you cold. Whether it was scurrying across the counter when you turned the light on or darting under the stove when you opened a drawer, one thing is certain — you want it gone, and you want to make sure it doesn’t come back.
The good news is that if roaches are showing up in your kitchen and you haven’t seen them anywhere else in your home yet, you’re catching this early. That’s exactly when treatment is easiest and most effective.
This page walks you through a complete kitchen roach treatment using the Riddy German Roach Combo Kit — a professional grade solution that requires zero mixing, zero special equipment, and works for renters, apartment dwellers, townhome residents, and anyone who wants to handle this themselves without hiring an exterminator.
Why This Kit Works So Well
Most people reach for a can of roach spray from the hardware store and hope for the best. The problem is that those products are mostly repellent-based — they scatter roaches rather than eliminating them, and they do nothing about the eggs and nymphs already developing inside your walls and cabinets.
This kit takes a completely different approach. It combines:
- Two adulticides that kill existing roaches fast
- Two insect growth regulators that prevent the next generation from ever developing
- Professional grade cockroach bait that roaches carry back to the colony
- Monitoring traps so you can confirm the problem is gone
You don’t need a sprayer. You don’t need to mix anything. You don’t need a pesticide license. Everything you need is in the box, and the whole treatment takes less time than waiting for a pest control appointment.
What’s In the Kit
- Doxem NXT Aerosol — a crack and crevice aerosol with a built-in straw applicator containing two adulticides and two insect growth regulators
- Maxforce FC Magnum Roach Bait — four tubes of professional Bayer cockroach gel bait
- Monitoring sticky traps — to track activity and confirm elimination
Riddy German Roach Combo Kit — Maxforce FC Magnum + Doxem NXT
The Riddy German Roach Combo Kit delivers fast, professional‑grade roach elimination using Maxforce FC Magnum gel bait and Doxem NXT aerosol for deep, long‑lasting crack‑and‑crevice control.
- Dual‑Action Formula — Gel bait plus Doxem NXT hits roaches at every stage.
- Long‑Lasting Control — Dual IGRs stop eggs and nymphs from developing.
- Reaches Hidden Areas — Targets cracks, voids, and appliance gaps easily.
- Pet‑Safe When Used Correctly — Strong results with safe, directed use.
Available on Amazon!
Step 1 — Clean the Kitchen First (This Is Not Optional)
Before any product goes down, the kitchen needs to be clean. This is the step most people want to skip, and it’s the reason most DIY treatments fail.
Roaches are not going to eat bait when there’s real food available. Crumbs under the stove, grease on the back burners, residue inside cabinet shelves, food debris under the refrigerator — all of that competes directly with your bait. If you skip the cleaning, you’re wasting product.
Clean these areas before you treat:
- Wipe down all cabinet shelves and drawer interiors
- Clean behind and under the stove — pull it out if you can
- Pull the refrigerator out and clean behind and underneath it
- Clean under the sink thoroughly
- Wipe down all countertop surfaces and backsplash areas
- Make sure there are no dirty dishes in the sink
- Check for any dripping pipes or moisture under the sink and fix them if possible
Once the kitchen is clean, the bait becomes the most attractive food source available. That’s exactly what you want.
Step 2 — Apply the Doxem NXT Aerosol
The Doxem NXT aerosol is the workhorse of this kit. It contains four active ingredients — two that kill existing adult roaches quickly and two insect growth regulators that work on the population you can’t see. More on the IGR in a moment, because it’s genuinely impressive technology.
The aerosol comes with a built-in straw applicator that lets you inject product directly into cracks, crevices, and voids where roaches hide. No sprayer to buy, no mixing, no cleanup afterward beyond capping the can. Just point and spray.
For a light infestation or preventative treatment: Make injections approximately three feet apart along baseboards, cabinet edges, and crevices.
For a heavier infestation: Make injections approximately twelve inches apart and move the straw tip along running cracks at a slower rate.
Where to apply:
- Along baseboards in the kitchen
- Under and behind the stove
- Behind and under the refrigerator
- Inside cabinet hinges and along cabinet frame edges
- Around plumbing lines under the sink
- Around the dishwasher
- Along any cracks where the countertop meets the wall
- Around the base of the kitchen sink
One important note: Do not apply more than once every seven days. The product is formulated for a timed release — retreating sooner than that isn’t more effective and wastes product. If activity continues after the first treatment, wait the full seven days before retreating.
Step 3 — Apply the Maxforce FC Magnum Roach Bait
Maxforce FC Magnum is a professional Bayer formulation and one of the most effective roach baits available. Roaches find it, feed on it, and carry it back to the colony where it spreads to other roaches — including ones you never treated directly.
The key rule with bait: less is more. A pea-sized placement is all you need. Don’t glob it on thinking more is better — small, frequent placements outperform large ones every time.
The Straw Method — A Better Way to Apply Gel Bait
Squeezing bait directly onto cabinet surfaces creates a sticky mess that dries out faster than it should and is annoying to clean up later. After years of professional application, the best technique is the cut straw method.
Take a regular drinking straw and cut it into pieces about three quarters of an inch long. Fill each piece with a small amount of gel bait. Now you have a clean, self-contained bait placement that you can tuck into spots that would otherwise be impossible to treat.
Why the straw method is better:
- Protects the bait from drying out — extends effectiveness significantly
- No sticky residue left on cabinet surfaces
- Lets you place bait in spots you can’t reach any other way
- Easy to drop behind appliances you can’t move
- Simple to replace when bait is consumed
Where to place bait:
- Under the sink in the back corners
- Inside cabinets — especially upper cabinets near the back
- Inside drawers — tuck them in the back corners
- Behind the refrigerator — drop a few loaded straws into the gap
- Behind the stove
- Under small appliances like the microwave, toaster, or coffee maker
- Inside cabinet hinges
Behind electrical outlets: While you’re at it, consider removing the outlet cover plates in the kitchen and tucking a loaded straw bait piece into the wall void behind the outlet. Roaches use electrical chases to travel between rooms and even between apartments. This is one of the most effective and overlooked placement spots.
Keep bait away from freshly sprayed areas. The spray and the bait work as a team but they need to be separated — spray in the cracks and voids, bait in the protected spots nearby.
Step 4 — Set the Monitoring Traps
The sticky monitoring traps that come with the kit serve two purposes. During treatment they tell you where activity is concentrated. After treatment they confirm the problem is gone.
Where to place them:
- Along walls in corners where you’ve seen roach activity
- Behind the refrigerator
- Under the sink
- Along the baseboard in the area where you first noticed roaches
Check them every few days. Heavy catch in a particular area tells you that’s where to focus additional bait placements. Once traps stay empty for a couple of weeks, you can be confident the treatment worked.
Don’t Forget the Bathroom
While you have the kit out, seriously consider treating the bathroom even if you haven’t seen roaches in there yet. German cockroaches are strongly attracted to moisture, and bathrooms provide exactly that. If roaches are established in your kitchen, the bathroom is their next destination — or they may already be there without you knowing it.
A quick preventative application of the Doxem aerosol along bathroom baseboards, under the sink, around the toilet base, and inside cabinet hinges takes five minutes and could save you from a second infestation starting up right next door to the one you just eliminated. Treat it while you have everything out.
What to Expect After Treatment
Days 1 to 3: You may see more roach activity than usual. This is completely normal and actually a good sign — the treatment is flushing roaches out of hiding. Don’t panic. This is the system working.
After day 3: Activity should drop noticeably and continue declining. Bait consumption will be visible in your placement areas.
After 7 days: If you’re still seeing activity, you can retreat with the Doxem aerosol. Refresh bait placements in any areas where the bait has been consumed.
Weeks 2 to 4: The insect growth regulators continue working on the population you can’t see. Even if visible activity has stopped, the IGR is still preventing the next generation from developing.
How the Insect Growth Regulator Works — And Why It’s So Effective
This is the part of the kit that most people overlook, and it’s arguably the most important component for long-term control.
An insect growth regulator — IGR — doesn’t kill roaches the way an adulticide does. It attacks the roach life cycle at a biological level, and it does it in a way that is completely specific to insects. Here’s why that matters.
It exploits something unique to insects: Roaches and other insects depend on specific hormones to develop from egg to nymph to adult. IGRs either mimic or block those hormones, disrupting the developmental process at a fundamental level.
What actually happens to the roaches:
- Nymphs attempt to molt and either fail, become deformed, or get stuck mid-molt and die
- Some that do reach adulthood are sterile and cannot reproduce
- Females produce egg cases that fail to hatch
- The population doesn’t just slow down — it quietly collapses from the inside out
Why it cannot harm you, your dog, or your cat: Mammals — including humans, dogs, and cats — do not have the juvenile hormone system that insects rely on. We don’t molt. We don’t have chitin-based exoskeletons. The biological pathways that IGRs target simply do not exist in mammals. An IGR that devastates a roach population is biologically inert to your family and your pets. This is one of the reasons pest control professionals rely on them so heavily — they are highly targeted, long-lasting, and safe for use in living spaces.
How long it keeps working: IGRs remain active long after the initial treatment — often for several months. This is why a single thorough treatment with this kit can keep your kitchen protected far longer than a spray-only approach ever could.
Why This Kit Is a Smart Buy
A professional pest control service for a German roach infestation can run well over a hundred dollars for the initial treatment alone — and that doesn’t include follow-up visits. This kit runs around the cost of a decent dinner out, and here’s what you get for that:
No sprayer required. The Doxem aerosol has everything built in — the propellant, the straw applicator, the formulation. You don’t need to buy a pump sprayer, figure out mixing ratios, clean it out afterward, or find somewhere to store it. Open the box, use the product, cap the can, done.
Versatile and reusable. The aerosol stores well between uses and can be pulled out for future treatments or used on other pest problems around the home. The extra bait tubes store just as easily. Store everything in a cool, dry location — ideally between 60 and 80 degrees — like a cabinet that doesn’t get too hot. Avoid garages or outdoor storage in extreme temperatures.
One serious warning about the aerosol — and we’re going to be straight with you here because this matters. The Doxem NXT is formulated as a slow-kill product designed to spread through a colony over time. This is exactly what makes it so effective against roaches.
It is absolutely not the right product for a wasp nest.
We’ll say it again: do not use this on a wasp nest. Wasps are going to keep stinging you for a while before they get the memo, and that memo is going to arrive too late to help you. This is a roach kit. Let’s keep it that way.
Storing Leftover Product
After treatment, any remaining Doxem aerosol and Maxforce bait tubes should be stored in a cool, dry cabinet — ideally somewhere that stays between 60 and 80 degrees. Avoid storage in garages, outdoor sheds, or anywhere that gets hot in the summer. Properly stored, the remaining product will be ready for a touch-up treatment if needed or for treating a completely different pest issue down the road.
Frequently Asked Questions
IDENTIFICATION & BEHAVIOR
How do I know if I have German cockroaches in my kitchen?
The first sign is usually spotting a small, fast-moving light brown insect when you turn on the kitchen light at night or open a drawer or cabinet. German cockroaches are about half an inch long with two dark parallel stripes behind their head. Beyond actually seeing them, look for small dark pepper-like droppings in cabinet corners and drawer edges, yellowish egg cases tucked into crevices, and a faint musty odor in heavily infested areas. If you’re seeing any of these signs in your kitchen, treatment should start immediately.
Can I have roaches in my kitchen even if my home is clean?
Absolutely. German cockroaches hitchhike into homes on used appliances, secondhand furniture, grocery bags, cardboard boxes, and deliveries. A completely spotless kitchen can get German roaches from a single infested box or appliance brought inside. Finding roaches does not mean your home is dirty — it means something introduced them, which happens to people in every kind of living situation.
Why are roaches showing up in my kitchen specifically?
The kitchen provides the three things roaches need most — food, water, and warmth. Appliance motors generate heat. Plumbing provides moisture. Crumbs, grease, and food debris provide sustenance. Even a very clean kitchen has enough residual food and moisture to sustain a roach population in the hidden spaces behind and under appliances.
If I only see roaches in the kitchen, does that mean they’re only in the kitchen?
Not necessarily. German cockroaches are nocturnal and spend most of their time hidden. If you’re seeing them in the kitchen, that’s almost certainly where the main population is — but they may already be traveling to the bathroom for water without you knowing it. Treating the bathroom preventatively at the same time as the kitchen is always a smart move.
ABOUT THE KIT
Is this kit difficult to use?
Not at all. This is specifically designed for people who don’t have a sprayer, aren’t comfortable mixing pesticides, or simply want a straightforward solution without the complexity of a full professional treatment setup. The aerosol has everything built in — you just attach the straw and apply. The bait goes in small placements using the straw method described above. The monitoring traps peel and stick. The whole treatment takes less than an hour including the cleaning.
Is this kit safe to use around children and pets?
When used as directed, yes. The insect growth regulators in the Doxem aerosol target biological pathways that only exist in insects — they have no effect on mammals. The bait should be placed in concealed areas out of reach of children and pets, which is exactly what the straw method accomplishes. Always follow label directions and allow treated areas to dry before allowing children or pets back into the space.
Can I use this kit in an apartment?
Yes — and it’s actually ideal for apartment use. Renters who can’t store a large sprayer, don’t want to mix concentrated pesticides, or need a discreet and effective solution will find this kit fits the situation perfectly. The aerosol can is no different to store than a can of cooking spray.
How long will the kit last?
The kit provides enough product for a thorough initial treatment of a kitchen and bathroom with product left over for follow-up treatments or future use. Properly stored between 60 and 80 degrees in a cool dry cabinet, the aerosol and bait tubes remain effective for a significant period after opening.
TREATMENT QUESTIONS
Why do I need to clean before treating?
Roaches will not take bait when real food is available. Cleaning removes the competing food sources and makes your bait placements irresistible. Skipping the cleaning is the single most common reason DIY roach treatments fail. It’s also what makes the spray treatment more effective — a clean surface gives the product better adhesion and residual activity.
Why am I seeing more roaches after I treated?
Increased activity for up to three days after treatment is completely normal and is actually a sign the treatment is working. The adulticides in the Doxem are flushing roaches out of hiding and the bait is attracting them. By day three activity should begin dropping. If you’re still seeing significant activity after seven days, retreat with the Doxem aerosol and refresh your bait placements.
Can I use the aerosol more than once?
Yes — after the initial treatment you can retreat after seven days if activity continues. The can stores well between uses and can be used for future treatments or other pest situations around the home.
Why should I treat the bathroom too?
German cockroaches follow moisture. Bathrooms provide consistent water sources — dripping faucets, condensation, wet surfaces around the toilet and sink — and connected plumbing gives roaches an easy route between rooms. If roaches are in your kitchen, the bathroom is either already affected or about to be. A quick preventative treatment while you have everything out takes minutes and can prevent a second infestation from starting before you’ve finished dealing with the first one.
Why is this better than store bought roach spray?
Store bought roach sprays are almost universally repellent-based, meaning roaches detect them and avoid the treated area rather than picking up a lethal dose. They scatter the population rather than eliminating it, and they do nothing about eggs and developing nymphs. The Doxem NXT uses non-repellent chemistry combined with two insect growth regulators — a fundamentally different and far more effective approach that targets not just the roaches you can see but the entire population cycle.
STORAGE & SAFETY
Where should I store leftover product?
Store remaining aerosol and bait tubes in a cool, dry cabinet that stays between 60 and 80 degrees. Avoid garages, sheds, or anywhere that experiences temperature extremes. A kitchen cabinet or interior closet shelf works perfectly and keeps everything accessible for future use.
Can the IGR hurt my pets?
No. Insect growth regulators work by targeting juvenile hormone systems and chitin production — biological processes that only exist in insects. Mammals, including cats and dogs, do not have these systems. The IGR component of this kit is biologically inert to your pets and family members. It is highly specific to the insects it targets, which is one of the primary reasons pest control professionals rely on IGRs as a core component of any serious roach treatment.
Can I use this on other pests?
The Doxem NXT aerosol is versatile and labeled for use on a range of common household insects beyond cockroaches. It’s worth keeping the can stored and ready for other pest situations that come up.
Just please — and we cannot stress this enough — do not use it on a wasp nest. This is a slow kill formula designed to spread through a colony over time. Wasps are going to be extremely unhappy with you for quite a while before it works. This is a roach product. Use it on roaches.