After the waiting period, turn on the hot tap and let the water run for several minutes to flush the dissolved grease and remaining chemicals out of the system.
If you choose to use caustic soda, follow these steps to minimize danger: Go to product viewer dialog for this item. Instant Power Crystal Lye Drain Opener caustic soda shower drain
It can cause severe chemical burns to skin and eyes, and permanent damage if splashed. After the waiting period, turn on the hot
Repeated use can erode the walls of metal pipes, particularly in older homes with cast iron or galvanized steel, leading to "channel rot" and eventual pipe collapse. Repeated use can erode the walls of metal
Remove the drain cover and clear any visible hair or debris from the top of the drain. If water is standing in the shower, try to bail out as much as possible with a cup. (If you cannot bail the water out, see the "Important Note" below).
If you have PVC pipes, a septic tank, or you just like having skin on your hands, try these first: