It seems to have worked. I'm getting some itchiness but it's hard to tell if it's from the clothes still. There is a definite difference. I even went out and got chrysanthemum tea to mix with my herbs. Permethrin is a synthetic compound made to imitate an ingredient found in chrysanthemum.
There's something there. Not significant enough to quickly eradicate but i'll keep drinking it. Maybe drink 2 bags a day because it can be poisonous.