It won't harm your drains, pipes or septic system, as it made only from non-corrosive & nonacustic materials. It liquefies fats, oils, lint, paper, hair and other organic matter causing drain obstructions. Dissolves grease, hair, oils, soap paper products easily;Perfect to use on pipes, toilets, sinks, tubs and in other main drain lines;Made of a non-corrosive formula that's safe on septic systems;Uses its high density to cling to pipes and liquify drain obstructions;Non-corrosive, no caustic and odorless formula. We truly believe we make some of the most innovative products in the world, and we want to make sure we back that up with a risk-free ironclad 45 day guarantee. If you don't have a positive experience for ANY reason, we will do WHATEVER it takes to make sure you are 100% satisfied with your purchase. Buying items online can be a daunting task, so we want you to realize that there is absolute ZERO risk in buying something and trying it out. If you don't like it, no hard feelings we'll make it right. We have 24/7/365 Ticket and Email Support. Please contact us if you need assistance. Remember: Shipping usually takes 2-3 weeks read our Shipping for more details!