: If the drain is still slow, repeat the process until the water flows freely. Why Soda Crystals Work Dealing with blocked drains and sinks
Disclaimer: Always check your manufacturer's warranty for your specific plumbing and appliances. While soda crystals are safe for PVC, ABS, and metal pipes, always test on a small area first if you have unusual or vintage plumbing (e.g., lead pipes). soda crystals unblock drain