I've also heard about the horsetail tea as well.picked up a bag but didn't have the chance to use it.it needs to be steeped for awhile and just didn't have time.I really wanted to try because a fellow member said it also may help with terps. rotated between green cure (sodium bicarbonate )and something called pm remover(lactose,sodium bicarbonate , garlic powder).it worked.I also had a dry season so it wasn't bad this year for pm (like summer '15).GroErr seems to have the recipe though,you probably have all those ingredients at home.good luck