The best way to clean a shower drain is to never let it get dirty in the first place.
If there's still a blockage, try using a plunger or plumbing snake to clear it out. Make sure the plunger is properly seated over the drain and push down slowly and steadily until you feel resistance. Hold for a few seconds, then lift up. Repeat this process several times until you feel the blockage loosen. how to clean a shower drain
Follow it with half a cup of white distilled vinegar. Cover the drain with a rag or the plug to keep the fizzing action directed downward. Wait: Let it sit for 15–20 minutes. The best way to clean a shower drain