"I'd not assumed to use a plunger, Which worked for clearing my shower." Charlene Fisher There you will discover other products to use. Bow since it is a "crystal", it probably follow the piezo principles, but hey, I understand nothing at all, I say absolutely nothing, I see absolutely nothing, https://cristianvd9f0.ampblogs.com/the-2-minute-rule-for-how-to-clean-drains-in-arar-68273791