Gosh, I have no idea. I picked up a bag in the garden department and that's what I used on the goat... I had no idea there were different versions!
Did you ask in the garden department?

"Yes, I'm not sure what percent because I'm looking to dust for lice on my horses and my goats. Which one do you recommend?"
I had to get some Pepto Bismol for my goat at the gas station the other day. The woman told me she hoped I felt better soon. I felt the need to tell her it wasn't for me, but for my goat!
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"Be careful what you wish for, because you just might get it all... you just might get it all, and then some you don't want." Chris Daughtery