We use this product to keep our sewer drain clear of roots. It works well for that purpose, and we have purchased before several times. This was our first purchase from this seller and we were very satisfied by the service. Product was exactly as expected, packaged responsibly, arrived promptly, and was priced reasonably. We chose this seller chiefly because we wanted to purchase one 25 pound package and they were the one we found offering that for the best price. I would recommend doing business with them based on our positive experience.