(1) For example, if you put your hand in front of a cockroach , the insect will immediately turn and run in the opposite direction.(2) Removing the space prevents cockroaches and other pests from residing in the dark corners.(3) Houseflies, mosquitoes and cockroaches are identified as the most common domestic insect pests.(4) The ants and the cockroaches have also begun to return; no longer is it safe to leave the cat food out on the back step.(5) Vermin, mostly rodents and cockroaches , climbed out of the flooded gutters to seek refuge inside houses.