One year I caught 12 mice in a plastic snap trap in the laundry room. Then, even though I saw mouse sign daily, I did not catch any more mice for the next 3 days. I washed out the trap really good with hot, soapy water and let it airdry outside in the sun. I reset the trap with peanut butter that night and caught a mouse with in an hour. After emptying the trap and resetting it, I had another mouse by morning. Total of 25 mice caught in the laundry room and 5 caught upstairs that fall.
That is a lot of mice to have in the house, and I couldn't figure out why so many were making their way into the house. We did find a basement window that had somehow become unlatched and opened about 1 1/2 inches and have since fixed that.
But, ever since then, I have made sure to wash the mousetraps after catching 5 or 6 mice, just to make sure the traps don't have any dead mouse smell building up.
That is a lot of mice to have in the house, and I couldn't figure out why so many were making their way into the house. We did find a basement window that had somehow become unlatched and opened about 1 1/2 inches and have since fixed that.
But, ever since then, I have made sure to wash the mousetraps after catching 5 or 6 mice, just to make sure the traps don't have any dead mouse smell building up.