Pest ControlQuestion 76 of 319

Which of the following is a classic sign of a cockroach infestation?

a.Dropping shaped like rice grains and gnaw marks on wood
b.Webbing inside a bag of flour
c.Maggots wriggling in a floor drain
d.An oily, musty odor along with egg cases (oothecae) and shed exoskeletons

Explanation

Cockroaches give off a distinct oily or musty odor when their numbers are high. Other signs include brown egg cases (oothecae), shed exoskeletons, and droppings that resemble coffee grounds. Rice-grain droppings point to rodents, webbing to stored-product pests, and maggots to flies.

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