bat feces crumble test

animal attic bat black brittle brown control crumble crumbles disease diy droppings dung educational england eptesicus example excrement feces found fungus fuscus guano guide hazardous histoplasmosis how identification identify inspection lightly lucifungus mammal management misconception myotis myth nature new nuisance paper pest poop rabies removal rolled scat sparkle species test texture towel toxic vesper when wild wildlife