Invest in a bunch of standard rat traps, not just one or two. Place them baitside next to the wall. Both rats and mice like to move along next to the wall.
I find that if I take a piece of that plastic netting fruit and vegetables come in from the grocery store. Then place peanuts with peanut butter inside a little sack made from the netting and tape it down on the peddle of the trap. That way the rat must work and pull on the bait- gets em every time.
I find that if I take a piece of that plastic netting fruit and vegetables come in from the grocery store. Then place peanuts with peanut butter inside a little sack made from the netting and tape it down on the peddle of the trap. That way the rat must work and pull on the bait- gets em every time.