Do have pure boric acid (powder) for sale in your store?

Try feed store

Its not my store but no I've never seen it there

I don't know about the Boric Acid Powder. If you are looking it is always good to call ahead do you don't burn your fuel. Also you might want to try a feed store. Like Come See Come Save.

I bought some a few months ago, however unknown if it is In stock presently. As a suggestion, call the store, and inquire about the product.