Two cockroach species dominate Arizona pest calls: the American cockroach (Periplaneta americana) and the German cockroach (Blattella germanica). American cockroaches — also called 'waterbugs' — are large (up to 2 inches), reddish-brown, and typically enter homes from sewers and outdoor areas. German cockroaches are smaller, tan, and are the most problematic indoor species, reproducing rapidly in kitchens and bathrooms. Both species are nocturnal and scatter when exposed to light.
👁Warning Signs
Sightings at night in kitchens, bathrooms, or near drains. Droppings resembling black pepper or coffee grounds. Egg cases (oothecae) in dark, sheltered areas. Musty, oily odor in heavily infested areas. Smear marks along walls near moisture sources.
⚠Health & Property Risks
Cockroaches contaminate food and surfaces with bacteria including Salmonella and E. coli. Their shed skins and droppings are potent allergens that trigger asthma attacks, especially in children. German cockroach infestations can escalate from a few individuals to thousands within weeks.
Prevention Tips
Eliminate food and water sources — fix leaky pipes, clean up crumbs immediately, store food in sealed containers. Seal cracks around pipes and under doors. Reduce clutter. Keep garbage in sealed bins.
🛡Professional Treatment
Gel baits, insect growth regulators, and residual sprays applied to harborage areas. German cockroach infestations typically require multiple treatments. American cockroach control focuses on exterior perimeter and entry point treatment.
Frequently Asked Questions — Cockroaches
Dealing with Cockroaches?
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