I am a daily user. To pass any drug tests that may be coming up in the next few weeks, I would rather use synthetic urine or someone elses clean urine then quitting and hoping I left enough time for the THC to get out of my system. However, being male, I do not want to deal with smuggling in all the tools in order to heat the urine, mix the urine. Its a risk I would rather not take. So instead, I would like to empty my bladder, then insert a catheter and fill my bladder with either someone elses clean urine, or synthetic urine. Sounds painful, but whatever. It hurts and you deal with it. Does anyone know if synthetic urine could possibly be harmful to my system, or cause infection? Also, would inserting a clean, healthy person's urine into my bladder possibly cause infection or other problems? I was under the impression that urine is sterile, so shouldn't my bladder be fine? Urine is urine unless someone has an infection or alot of drugs in their system, right? Thanks.