Haven't had any rats this century. House mice, field mice, deer mice in snap traps. A shrew in a bucket, I let him go outside. The last pine squirrel I had been trying to catch got in the house through the garage. I hate pine squirrels for tearing up my car wiper fluid lines... and packing walnuts in the fenders and engine.In my experience, not an expert, the rodent baits are for specific rodents. I used mouseX with no results until I discovered they were voles. I used the VoleX and it worked. Sometimes what we believe is a mouse is actually a small rat, etc. If you get the correct formula, it does work. In rural and semi rural areas of course there are always reinforcements breeding in the fields. Wah!
Voles, moles and chipmunks bothering the garden