The slideshow above shows several examples of attics that need remediation. The first image is guano damage to the rafters in an attic. The second is an example of a guano build up pile in an attic. The third is an example of bats roosting in an attic. The fourth is another guano build up, and the fifth is the most important part of remediation, an attic after remediation. Remediation is the process of removing all of the damaged insulation in your walls and attics that is caused by a bat infestation. Cleaning up accumulations of bat droppings can be hazardous to your health, and should always be done by an experienced professional. The droppings can create a fungus that when breathed in by humans can leave them afflicted with Histoplasmosis.