Can you use over latex paint?

Thanks for taking the time to ask a question. No, I would not recommend using this over latex paint. In order to be effective, a stain must be able to adhere. Surfaces must be sound and absolutely dry. Be sure surface is free of all dirt, mildew stains, loose wood fibers and other foreign matter. Old loose stain should be scraped off and the edges sanded smooth for proper adhesion. I hope that helps. Respectfully, Reggie