Urine tests that look for drugs in your system are getting more and more adapted and better at detecting even the slightest traces of drugs in your system. Three days is not really a substantial enough amount of time to clean your system of drugs for a urine test. If you are undergoing a hair test then traces of drugs and alcohol can be detected in a sample of your hair for years after you take them, so unless you shave your head, there is not chance of you getting traces of drugs or alcohol out of your hair.
However, there are several methods that some people swear by to clean all traces of drugs out of your system three days before a urine test. The first one that people claim to work is taking three shots of vinegar, as disgusting as it sounds, and then drink as much water as you can. They say on the Internet that this must be done two days before the test so that your urine won't look too watered down. Then it might look suspicious to the testers. If you do this method the day before the test then your urine may appear like water, which again will look suspicious to testers.
Another method that is on the Internet is rather risky than the previous method. This one says to use toilet paper and ajax. Put the ajax in the middle of a sheet of toilet paper and roll in into a small ball. Then you need to take three of these like a pill with some water. Another method says that you should try mixing a small amount of bleach with cranberry juice however it is recommended that you try this, or the previous method because it could be very risky for your internal system.
Other people recommend that you could "borrow" some urine and put it in a pill bottle and hide it some place where it won't be detected when you go to take the test. Again, this could be very risky because if you are caught trying to cheat a urine test, then suspicion will be heightened.
However, there are several methods that some people swear by to clean all traces of drugs out of your system three days before a urine test. The first one that people claim to work is taking three shots of vinegar, as disgusting as it sounds, and then drink as much water as you can. They say on the Internet that this must be done two days before the test so that your urine won't look too watered down. Then it might look suspicious to the testers. If you do this method the day before the test then your urine may appear like water, which again will look suspicious to testers.
Another method that is on the Internet is rather risky than the previous method. This one says to use toilet paper and ajax. Put the ajax in the middle of a sheet of toilet paper and roll in into a small ball. Then you need to take three of these like a pill with some water. Another method says that you should try mixing a small amount of bleach with cranberry juice however it is recommended that you try this, or the previous method because it could be very risky for your internal system.
Other people recommend that you could "borrow" some urine and put it in a pill bottle and hide it some place where it won't be detected when you go to take the test. Again, this could be very risky because if you are caught trying to cheat a urine test, then suspicion will be heightened.