Did you find that water-based 10% Martin's at Tractor Supply? I've checked two nearby Tractor Supply stores, a Bomgaars, and the local farm co-op store and every permethrin concentrate I've seen on the shelf (including 10% Martin's) says "contains petroleum distillates" on the label. I went ahead and treated my farm clothes earlier this week anyway because I would rather smell like an oil refinery than have ticks crawling on me. I would like to find some water-based permethrin concentrate for my hunting clothes though.