This document discusses two common methods for foot detoxification: foot patches and foot spas. Foot patches are adhesive patches applied to the sole of the foot while sleeping that are believed to extract toxins, while foot spas use electrodes in warm water to release positive ions and extract supposed negative toxins from the feet. Supporters claim the discolored water provides proof of removed toxins, while skeptics argue the discoloration is caused by ingredients in the products rather than removed toxins. Both methods have been scientifically tested but different sides disagree on the results.