The chance of bottled urine transmitting CWD is virtually zero according to research from website. Frequently considered a catalyst for the disease due to its use in laboratory tests using highly concentrated doses, it is understandable why banning natural urine as a deer lure is regarded as an easy, sure fix to stopping the spread of CWD. The scientists behind those studies point out that their research shows urine is actually the least likely carrier of CWD prions.