the urine thing was a joke i think, im sure endospores exist but a soak isnt required to help kill them, if i can get a pic up here i have a blue oyster jar full of rizo myc and nothin else, no soak, no rinse, no problems. as long as you pc your seed for a sufficient amount of time the pressure will crack the endos. its a proven tek, it isnt my own but DrJugglz from shroomotopia so thats who the credit goes to but it works, next time you do jars do one of them the DrJugglz way and see for yourself, you may never go back to rinse and soak, i didnt.