If you want to keep rats and mice away from your home and garden, you can try this 5p test, recommended by an expert.

Here is a 1p coin. Two of these coins are worth the same as a 2p coin. Here is a 5p coin. A 5p coin is worth the same as five 1p coins. Two 5p coins are worth the same as a 10p coin. Two 10p coins ...