Cleansing drink, if you are a heavy user with high toxins buy two bottles and you take one and a half 1 hour before your test. You have to follow the instructions and drink a lot of water two days before. I've tested it with drug kits bought off the Internet and got negative results on dry runs

For this product you do really need to know when it is most likely they will test you, with a new employment you would hope that that would be on the first day or in the first week or them actually telling you the specific date/time. Some employers insist on a pre work medical to be undertaken which is when they normally would carry it out. Not ideal but you could buy 7 bottles for every day of your first week to try and cover yourself but that is the only way I can see when not knowing the exact time.

Other tips are sauna/steamrooms, drinking pure water (over 3L per day) take b12 vitamins to make your urine yellow again. Eat healthy prior to the test, a few days before test refrain from exercise as you don't want to put more thc (from your fat) into your pee. Hoping for the best for you 👍