Permethrin is really fantastic. Anyone here know the best way to apply it to clothes? I've sprayed my clothes with a 0.5% spray, which I got for $5.92/266ml or

Permethrin is really fantastic. Anyone here know the best way to apply it to clothes? I've sprayed my clothes with a 0.5% spray, which I got for $5.92/266ml or $14.99/739ml, so about $4.00/ml of pure permethrin. Amazon has an 8oz/236ml bottle at 10% for $36, so about $1.35/ml of pure permethrin, but then you've got to soak your clothes instead of just spraying them, and that takes several hours and you've got to get rid of the fluid afterwards. Anyone notice a difference in effectiveness between spraying and soaking clothes?