I tried it I'm not sure I did it right ... I peed in one cup and put bleach in another  I poured the urine into the bleach and it fizzed  up a little then went back down so I poured more thinking I prolly didn't pour enough and it fizzed up allot then went back down and then exploded with fizz even made a little popping sound lol so I'm thinking it was a positive but I'm also thinking it woulda fizzed either way so not really sure it worked .... Any thoughts would be appreciated