Zep Drain Care liquid offers 64 oz of prevention for blocked up sinks, toilets & showers. Its enzyme-based formula eliminates years of drain-clogging build-up to avoid clogs happening. Use it once a month to preserve your home's pipes. Certified & biodegradable formula, breaks down into CO2, minerals & water. It's an easy, convenient way to keep your drains flowing and reduce the need for expensive repairs. Regular maintenance with Zep Drain Care is the best way to ensure a healthy home.