Yes, those detox potions are a big scam. Their makers tend to make any claim in the world in order to woo in the credulous and taking their cash.

However, its not uncommon for longtime heavy smokers to take up to 60-90 days to finally test negative. Actually, the longest ever reported was 105 days. This person was a heavy user for many, many years, weighed in on the wrong side of 375 pounds, and indulged in zero physical activity.

I think if people have failed tests of any kind after even 30 days they have been smoking or are around others who are.
People failing urine tests because they have smoked. You cannot test positive on the basis of secondhand smoke.
Burnt Toast Reviewed by Burnt Toast on . Why is everyone so worried including me? I found studies all over the internet indicating that it takes 30 days max to ride your self of THC and its left over. The only sites stating a longer time frame were sites advertising detox hoaxes. So sites that could make money off the paranoia had listed longer detection times and sites that referenced scientific studies always say 24 hrs to 30 days, but no more than 30 days. I guess if you are very inactive and have allot of fat it could last over 30 days. But seriously this 90 day Rating: 5