Combat Source Kill - Cockroaches

I saw a roach last night crawling on the wall (right next to my computer) so today I bought a pack of LARGE roach traps. I just put down 8 of the things all over the house. I was worried that they would be bad for the cat but I read that the cat will be fine. Hopefully these things will work. I don't think we have a bad roach problem... Or I hope we don't. But I'm worried that they may be moving in so yeah. Hopefully this will stop it.