This would be the way I would do it if it were me. Wait till morning to see how first urine is. If clean, use it and keep temp between 90-100. If dirty, follow the dilution method. I think you will do good either way. Don't forget your tums/rolaids, salty water/gatorade (to increase PH) and vitamin B of somesort. Just make sure you take 10 times the DAILY RECOMMENDED milligrams of vitamin....NOT 10 pills.