How long for rat poison to work?

How long for rat poison to work?

So How long for rat poison to work? Rat poisons have been around for a long time. Rats aren’t exactly a modern problem; after all, people have had to deal with rats and the problems they cause throughout human history. For most of our past, cats were the preferred method of controlling rodent populations and keeping them out of our homes. But a cat is quite a big investment for people today, especially if it’s mostly to get rid of rats. Instead, we can turn to cheap, commercially available rat poisons.

These rat poisons, or rodenticides, can be divided into two generations. The older first-generation poisons take around seven days to kill their targets because they require them to consume multiple doses. Newer second-generation poisons kill their prey much quicker, usually within two to three days, and are effective after a single administration.

Not only do second-generation poisons kill rats much faster than the older varieties, but they are also much safer to use in homes with pets and small children. Older rat poisons are more likely to cause secondary poisoning, whereby an animal that consumes a poisoned rodent ingests enough poison to kill them as well. Because the newer poisons are more potent, there is less of it present in the carcasses of poisoned rats. Should a family cat or dog eat a rat that was killed by a second-generation poison, they are unlikely to suffer any ill effects.

The specific poison used isn’t the only factor determining how long it will take a rodent to die. With both first and second-generation rodenticides, the fresher they are, the more potent they are. Old or expired rodenticides are less effective and can even enable the rodents to develop a resistance to the toxin. The amount of poison a rat consumes will also play a part in determining the timeline of the effects.

How long for rat poison to work?

The answer to this question depends on the type of rat poison that is used. Some rat poisons work within hours, while others may take days or even weeks to be effective. It is important to read the instructions on the rat poison label carefully to determine how long it will take for the poison to kill the rats.

Some types of rat poison kill the rats faster than others. For example, anticoagulant poisons prevent blood from clotting and results in internal bleeding that kills the rats within 24-72 hours. On the other hand, cholecalciferol (vitamin D3) causes hypercalcemia which is an excessive amount of calcium in the blood. This can lead to kidney failure, heart problems, and death within several days.

It is important to be aware of the different types of rat poison so that you can choose the one that will work best for your situation. If you are not sure which type of rat poison to use, consult with a professional exterminator.

How To Get Rid of rats

Read more about pest control services for rats in London.

Get in touch with Bon Accord your local pest control expert.

Pest advice for controlling Rats from BPCA


Karin HarndenKarin Harnden
17:14 05 May 24
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20:26 20 Feb 24
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