OK, resident Scotts Miracle Gro Rep here....get yourself a 1.33 Gallon Magic Wand Home Defense from Home Depot/Lowe's/Walmart and spray around the perimeter of your house, inside and out, around all doors and windows, and anywhere you think the bastards could get in. Home Defense will not only kill them, it will prevent them from coming in again as well. It is a barrier that protects the house from just about every bug you can think of.
That is what it looks like. The wand is battery operated, so you don't have to keep squeezing the trigger. There is also a 1 gallon size and a 24 oz. size that you have to squeeze the trigger. The wand should cost around $14.98, while the gallon is $7.47, and the 24 oz. is $5.94 I believe. Spray this stuff everywhere, it dries in an hour and will not harm your pets. It's odorless, so you won't have to deal with any foul odors.