David from Bronx,ny writes
Contrac bait should be stored at room temperature and replaced every 40-60 days in the bait stations because it contains food based ingredients. The bait could mold or sour in the hot or cold months (should be replaced every 30 days during the summer and winter) and may be less palatable to the mice. It should eradicate the mice if they consumed enough of the bait.
Answer last updated on: 10/12/2013