If you wonder what that “pitter patter” sound you hear at night is, you might consider that Fall is the time of year when rodents start coming indoors. If you suspect rats or mice, you might want to start utilizing traps to catch them, as you work to seal up any and all of their entrances. There are decent (black plastic) rat traps available at Fred Meyer. A good exterminator will come seal up any holes where he/she thinks the rats are entering the house (near plumbing, attics, basement, holes in siding.).Sealing the holes should be done before it gets really cold and they prefer to stay indoors during the day. Try not to keep compost type garbage in the house, which really attracts them What you don’t want is for a rat to eat a poison like Decon then NOT be able to make it outside and die/rot in the wall. Decon is also hard on cats and Chihuahuas.