Insecticides used for control are designed to have a residual action which goes on killing cockroaches several months after the initial application.

We got the landlord to agree to the plan, and he gave us the spray and stuff to kill the rats and cockroaches.

"Gee, honest, you hadn't ought to kill cockroaches with a Bible!"

"When you kill cockroaches, you don't feel sorry for them, do you?"

The chemical cloud your landlord used to kill cockroaches?

Oh, if you could see him killing cockroaches with a slipper!

"It won't kill cockroaches," I said.

I once had an octopus in a research tank that learned to kill cockroaches and use them as bait to catch crabs.

The chemical has been widely used since 1948 to kill flies, mosquitoes, gnats, cockroaches and other insects.

These products are often used around the home to kill cockroaches, fleas, and other pests.