07/10/2026
The bait’s gone. So why are the rats still there?
It doesn't necessarily mean the bait "doesn't work". There are several reasons a rodent treatment can fail, and simply putting more bait down isn't always the answer.
Some rat populations in the UK have developed resistance to certain anticoagulant rodenticides. Rats can also be reluctant to enter bait stations or take unfamiliar food, while poor bait placement, competing food sources and rats moving in from surrounding areas can all affect the success of a treatment.
That's why professional rodent control starts with understanding the site.
Where are they getting in?
Where are they feeding and drinking?
Where are they sheltering?
What evidence tells us where they're travelling?
From there, the right control measures can be chosen. That may include rodenticide where appropriate, but proofing, reducing access to food and water, removing harbourage and other control methods can be just as important.
For landlords and commercial premises, getting this right matters. Repeatedly treating the rodents you can see without addressing what's allowing them to thrive can leave you dealing with the same problem again.
If you've tried DIY bait and you're still seeing signs of rats, stop spending money on more products and get the cause investigated properly.
Pest ID covers Essex and East London.