Many people call us two or three days after the technician's visit, worried because something is still scratching in the ceiling void or fresh droppings have appeared under the sink. In the vast majority of cases, the treatment is simply doing its job.
Knowing how the baits work makes this period easier to get through and, above all, helps you avoid the things that drag it out, whether at home or on business premises.
A delayed effect, on purpose
Most rodenticides used by professionals work by blocking blood clotting. Symptoms only appear after several days, so the animal does not link feeling unwell to the bait, and the rest of the group keeps feeding on it.
Brown rats are also wary of anything new: a rat may walk around a bait station for a few days before touching it. Mice are more curious and nibble quickly, but in small amounts and in many places. Either way, an overnight result is neither possible nor desirable.
What you may notice, stage by stage
Every situation is different, but it often unfolds like this:
- The first days: activity unchanged, sometimes even more visible, while the rodents find the stations.
- Then: noises become less frequent, new signs get rarer, bait consumption drops.
- At the follow-up visit: the technician checks every station, replaces or moves what needs it, spots the routes still in use and plans the proofing work.
- At the end of the protocol: stations are removed or left in place as agreed, and the photo report sums up everything that was done.
Habits that slow the treatment down
Treatments often drag on because of well-meant actions. For the whole protocol:
- Leave bait stations exactly where they were placed, and do not open them.
- Remove other food sources: bags of pet food, birdseed, bread, open bins, fruit left on the worktop.
- Do not add shop-bought traps or products without talking to the technician first.
- Wait for the go-ahead before blocking a hole: an animal trapped in a wall cavity can die there and leave a lingering smell.
Smells, droppings and pets
A rodent that dies somewhere out of reach can cause a smell for a few days, sometimes two to three weeks, until the body dries out. Let us know: it is sometimes possible to locate and remove it.
Rodent droppings and urine can carry diseases, including leptospirosis. Clean up wearing gloves, dampen the area with disinfectant first, and pick up without sweeping or dry vacuuming. If you think a dog or cat has swallowed rodenticide, call a vet straight away: vitamin K1 is the antidote to anticoagulants.
Key points
- 01Noises in the first days are normal: the bait acts with a delay.
- 02Things usually quieten down over one to two weeks.
- 03Leave the stations alone and remove any other food.
- 04Sealing holes is decided with the technician at the follow-up visit.
This article gives general information, up to date on its publication date. It does not replace legal or medical advice tailored to your situation.