Once you have found a major harborage, spray it with disinfectant and let it sit for 10 minutes. Then you can wipe the area dry. Next, use soap and water or a light degreaser to scrub the area down. Spray it one last time with a disinfectant to kill any leftovers.
Are dead roaches a good sign?
You see a live roach or find a dead one
A lack of resources and overcrowding can force roaches to migrate during daylight hours if they want to survive. Finding a dead roach is also an indication of an infestation, especially if it is found in areas where droppings or egg casings have been found.
How do I get rid of roaches permanently?
Boric acid is one of the best home remedies for roaches if you are keen on taking the DIY approach. Mix equal amounts of boric acid, flour, and sugar to make a dough. Set balls of dough around the home where cockroaches can feed on it. The flour and sugar will attract the roaches while the boric acid will kill them.