To prevent Tick-Borne Relapsing Fever (TBRF) one should avoid sleeping in rodent-infested buildings whenever possible. Although rodent nests may not be visible, other evidence of rodent activity (e.g., droppings) are a sign that a building may be infested; Prevent tick bites. Use insect repellent (on skin or clothing) or permethrin (applied to clothing or equipment). If you are renting a house and notice a rodent infestation, contact the owner to alert them. If you own a house, consult a licensed pest control professional who can safely identify and remove any rodent nests from walls, attics, crawl spaces, and floors. Treat “cracks and crevices” in the walls with pesticide and establish a pest control plan to keep rodents out.