I had them in the house a while back ( toddler dropping food everywhere and a dog that does the same with his kibbles), ended up hoovering up about 3 times a day and used the electronic traps, that soon made them move out (we are next to fields and have the same problem every autumn), they decide to move into the house when theirs is cut down, they don't last very long though! The worst thing is removing the corpses (my husband is the biggest wuss in the world when it comes to dead things), with the electric traps you just open a dog poop bag, or carrier bag - make sure it has no holes, put the entire trap inside & open the door, the corpse will fall into the bag, double bag it & bin it. I like them as they have a green light on when armed, which flashes red if they zap something. I always get one or two in the autumn, refugees from the fields.