Ticks are harmful to people and pets, and often carry diseases like Rocky Mountain spotted fever (RMSF), ehrlichiosis and Lyme disease. 

This story may make your skin crawl.

A special lab is set up in Jefferson County to help map ticks and the diseases they carry. 

Louisville's health department wants your ticks.

Ticks carrying the bacteria that causes Rocky Mountain Spotted Fever have been found in south and east Louisville.

"I have been bitten by hundreds of ticks and never thought that something like this could ever happen."