With Ladygooner on this one, buy Rat poison not mouse,if you go to a well known shop in LL you will get lot's of good advice on not using rat as it won't work, you will then be sold mouse poison which you will buy for ever. The amount of bromadiolone in mouse poison is to small the mice have become tolerent to it you just feed them and they breed quicker and stronger the Rat poison will work but it will be about 10 to 15 days before you notice results. BoB S