First of all, get rid of all paper/corrugated cardboard you use in
cabinets or for storage....they love to nest in c.c. Wash, seriously
and thoroughly, insides of all cabinets, floors, broiler pans, drip
pans, cat boxes, etc. Clean off all food containers in cabinets, esp.
anything that has been opened.
When I lived in Fl., we had a serious infestation that became horrible
when an upstairs neighbor moved out. We had Sears exterminate, one
time, which cured the problem (five years on). They used a bait which
they said was peanut butter and boric acid....it was applied in little
dabs along baseboards, cabinet shelves, around appliances and then they
took off covers of wall outlets and switches and applied inside them.
They said wall spaces are a favorite place to hide. They were soon gone
and never saw another.