Detox "cleansers" are nothing but a scam to seperate the credulous and uninformed from their cash. The worst are the ones that boast "7 day detox" etc. because the claims made by the manufacturers are downright false. If these guys had done their research on THC (instead of exploiting unfortunate victims in the so-called "war on drugs") they would know that there is no product, nothing that can rid the body of THC, except time and exercise.

All detox cleansers work via the dilution principle. They work because of the water thats required by the instructions to drink with them. Because fluids are consumed, the THCA thats present in the bladder is "thinned out" (albeit temporarily) to where the sample registers below the cutoff thresholds of the drug screen. Again, this dilution action is only temporary. Once youve voided out all of the fluids consumed, you'll resume testing positive for THC.
You could duplicate those actions for $$$ less by using just vitamins and B2.

Exercising is a good idea only if you have several weeks or more to prepare for a THC drug test. Exercising is not good if you have 0-3 days before the test because by burning fat cells, the stored THCA is released back into the bloodstream and all end up in the urine and bowels. Because of this, all fat-burning activities should cease and the donor should be dormant as possible for those 3 days. You dont want a bunch of THCA to be released into the bloodstream and accumulate in the urine to be detected.

Sweating doesnt help much because very little THC is excreted via sweat. The rest is being excreted via the urine and bowels.

Because they only serve to dilute temporarily, drinking water or any types of fluid is only good for the day of the U/A. Drinking a bunch of fluids days or weeks before the test is of no help. It may cause frequent voiding, but it has no effect on the rate in which THCA is filtered from the bloodstream by the kidneys.