Snap traps do not cost very much and putting some candy on them for bait will attract them and that way you will know where they are and you can dispose of them. When poison is used, they do not always go outside, they will die somewhere in the house.
Sealing off where they come in will help. They can come up the pipes under the sinks and in the laundry and behind the dishwasher.
You must get rid of the food source first. then you have to see whether they have burrowed into the ground. they live near the food source. hard to get rid of without a poison unfortunately.
Can I spray eucyliptus oil or tea tree oil around the house to get rid of rats or something to get rid of them help and I don't have anything peppermint except mouth wash... Help