German Cockroaches

Oh no, I think I have German Cockroaches!

Give us a call

There are house guests… and then there are German cockroaches. The kind that don’t knock, don’t leave, and absolutely do not contribute to the rent.

Small, quick, and impressively committed to overstaying their welcome, these little operators are among the most common (and frustrating) household pests. If you’ve ever flicked on a kitchen light at night and witnessed a suspicious scurry, you’ve probably already met them.

But before you consider abandoning your home entirely, it helps to understand what you’re dealing with. Because while German cockroaches are undeniably annoying, they’re also predictable and that makes them beatable.

German cockroaches are the tiny, light-brown ones with two dark stripes running down their backs. They’re much smaller than the big, dramatic cockroaches you might see outside… but don’t let their size fool you.

These ones are indoor specialists.

They thrive in warm, humid environments ( kitchens and bathrooms), reproduce quickly, and are experts at hiding in the smallest cracks and crevices. Think:

  • Behind fridges

  • Inside cupboards

  • Around sinks and dishwashers

  • Even inside appliances

If there’s warmth, moisture, and a crumb or two to snack on, they’re interested.

Why Are They Such a Problem?

German cockroaches don’t just pop in for a quick visit, they settle in and multiply. Fast.

Here’s what makes them particularly tricky:

  • They reproduce rapidly
    One female can produce hundreds of offspring in her lifetime. So spotting one often means there are more nearby.

  • They hide well
    They can squeeze into tiny gaps, making them hard to detect and even harder to eliminate completely.

  • They’re resilient
    These pests have been around for a very long time. They’re adaptable and not easily phased.

  • They’re nocturnal
    If you’re seeing them during the day, it can indicate a larger infestation (not ideal, but useful to know).

Why are these guys a health concern?

  • Rapid Reproduction: An extremely fast breeding cycle which mean significant bacteria risks in a short period of time

  • Health Hazards:They carry bacteria and can contaminate food

  • Allergy & Asthma Triggers: They can cause severe allergic reactions to elderly and young children due to their shedding of skin, saliva and droppings.

  • Unpleasant Odours: if the infestation in the home is quite large they can produce an unpleasant smell which can easily travel throughout the home

Signs You Might Have a Problem

German cockroaches are subtle… until they’re not. Here are a few clues to watch for:

  • Small, dark droppings (a bit like pepper or coffee grounds)

  • A slightly musty or oily odour in cupboards

  • Egg casings (small, brown, oval-shaped)

  • Live sightings, especially at night

And yes, unfortunately, seeing one often means there are others keeping a low profile nearby.

Why They Love Your Home

From a cockroach’s perspective, your home is prime real estate.

They’re drawn to:

  • Food: crumbs, spills, unsealed containers

  • Water: leaky taps, damp sponges, pet bowls

  • Warmth: appliances give off just the right amount of heat

  • Shelter: plenty of hiding spots close to food and water sources

While you can get the problem treated, if your home is primed for them, they may come back, here are some simple daily habits to keep them away, small changes can make a big difference. German cockroaches rely on easy access to food and water so remove that, and you make their lives much harder.

Do This:

  • Keep surfaces clean
    Wipe down benches, especially after cooking.

  • Store food properly
    Use sealed containers instead of open packaging.

  • Take the rubbish out regularly
    Overflowing bins are basically an invitation.

  • Fix leaks promptly
    Even a slow drip can be a reliable water source.

  • Vacuum and sweep often
    Crumbs are more valuable than you think (to a cockroach, anyway).

Avoid :

  • Leaving dishes overnight
    It’s a buffet they didn’t have to work for.

  • Ignoring small signs
    Early action is much easier than dealing with a full-blown infestation.

  • Cluttered cupboards
    More clutter = more hiding spots.

What If You Spot One?

First things first: don’t panic. One sighting doesn’t mean your home is lost to the cockroach kingdom, though with these nasty guys, if you see one, you have plenty hidden away.

This means it’s time to act.

Start with:

If you continue to see them, it’s best not to wait too long before stepping things up.

How does Pesthouse respond to and treat this pest?

  • We do a two-part targeted approach using baiting, dust and residual spray. The residual spray will continue to treat them well after we are gone

  • We use cockroach baiting to draw the German cockroaches out of their hiding places and to come into contact with the pesticide

  • The baiting we use has a transfer effect, this means when the little guys return to their harbourage, it will spread the pesticide to it’s friends and any eggs that haven’t yet ventured out

  • We then return at the 6-8 week mark to do a second treatment, this will break the lifecycle and treat any additional babies, before they have a chance to lay more eggs

Oh no, I have German Cockroaches!