The answer to 'why is my cockroach nests' is that cockroaches often create nests or harborages in homes due to access to food, water, and shelter. Cockroaches prefer dark, warm, and moist environments where they can hide and breed. Common signs of a cockroach infestation include seeing live cockroaches, finding egg cases, and noticing a musty odor.
To address a cockroach problem, it's important to eliminate food sources, reduce moisture, and seal up entry points. Thorough cleaning, using baits and insecticides, and preventing future infestations are key steps. However, for severe or recurring infestations, it's best to call a professional pest control technician who can properly identify the species and apply the right treatments.