Bat Free LLC has had customers express the sentiments that if the bats stay in the attic there is little danger with regard to any effect on the living space. Sadly this is not true. In addition to the potential for rabies, histoplasmosis, and unpleasant odors, bats carry ectoparasites, such as bat bugs and bat ticks. These “lice” may enter the living space of a structure in search of an alternate host. Once allowed to become established, this parasite will require structural pest control (pesticide application) to eradicate.