Know Your Poisons - Guide to Rodent Poison

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Know Your Poisons

There are a abundance of baits on the market and sometimes choosing the correct one that will work for you is tricky. Words like Anti-Coagulant and Microencapsulated Alphachloralose Bait mean nothing to the everyday shopper. Our guide helps you choose the bait that is best for your situation.

Grain Bait

The most common bait on the market. Its advantages are ease of use, simply put down near or around infested areas. The rodents will carry this grain to their nest and will ultimately feed the nest with the grain they managed to squeeze into their cheeks. There is a problem with the rodents stealing the bait; it’s hard to determine if all the rodents have eaten the bait or just one very hungry Rat or Mouse.

Bait Blocks

Bait blocks are condensed forms of the Grain Bait as mentioned above. Unlike loose bait a rodent will have trouble taking this type of bait away to its lair. They have the added benefits off being easily secured to bait stations or with wire to surfaces. Activity or consumption is easily monitored also, as bite marks will be present. Another consideration is storage, blocks are easier to store and transport than grain which can leak or spill.

Bait Sachets

Bait Sachets are usually mulched cereals and Oils with added flavouring to make them highly attractive. The packaging will usually be edible, almost like sugar paper. The benefits include being able to handle them without the use of gloves as the poison is encased. The sachet can also be anchored down or nailed to a surface if so required. The sachets are usually more powerful as they are mixed with liquid poisons which allow far greater strengths than the traditional grain and Blocks.

Tubed Paste

Tubed paste is essentially Bait sachet contents in a easily stored and applied bait. Added benefits are that you can control the dosage placed down. This especially helps if you are baiting traps and don’t wish to use a whole sachet. This allows the chance of the bait killing the rodent if it manages to escape the trap.


Poisons vary in strengths and palatability and knowing which to use for the Rodent you have is key. If you have been searching for poisons you will frequently come across the words “Difenacoum” and “Bromadiolone”. They are the most commonly used active ingredients and in recent studies Rats and mice are becoming immune to certain poisons. Rats in London are immune to Difenacoum which makes Bromadiolone the must have in Inner Cities. In time they will become immune to this and the industry is always evolving and producing different poisons. Hence, the confusion.

Brofificoum is a mixture of both Difenacoum and Bromadiolone poisons and are becoming far more popular for pest controllers that don’t want to have two types of bait, one for inner cities and one for rural. Alphachloralose is the industry’s strongest bait and studies have shown almost immediate death. Like with most things you pay for the quality and the more expensive baits with more active ingredient will always be more effective than cheaper generic products.


As always safety should always be taken seriously and the secure storage of bait and chemicals is paramount. A vast majority of baits are professional use product sand should be handled by only trained pest controllers. Your everyday consumer will not need a large quantity of bait and for this reason a law was passed last year that prevents retailers selling baits in excess off 5kg’s.

As always if you are unsure then feel free to contact us for advice.

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