Passing 10 years ago with dilution was easier because creatinine clearance (which helps detect dilution) wasn't a part of many drug tests so drinking a lot of water to pass was easier. If you can get a clean donor or order a synthetic urine such as Quick Fix is your best bet. Pre employment drug screens are not observed (watching the urine leave the body and enter the cup) unless you give them cause. Subbing may sound like a hard and risky task but with practice it isn't hard at all. A joint a day and 1 week clean time makes dilution a viable option but honestly subbing is easier and more effective. You can practice securing your sample to your body or you can use your female assests to hide a 2 ounce bottle of your sub sample.