Tinks Power Buck Synthetic Buck Urine induces territorial challenges from local bucks by making them think a strange buck has entered their breeding grounds. This is the logical deer attractant to use in areas where the use of natural cervid urine is prohibited. Synthetic buck urine also has the advantage that bacterial breakdown does not create ammonia-like odor with age. Power Buck Synthetic Buck Urine works well with rattling or grunting tactics, with mock scrapes, or squirt some on a scent wick, hang it by your stand and get ready for action. Does not contain deer urine. 4-oz. bottle. Cancer and Reproductive Harm- www.P65Warnings.ca.gov. Type: Attractants.