Drain cleaner can be used to unclog a shower floor drain as long as care is taken. There are several other methods that can offer success in clearing shower drains.
Directions on drain cleaners should be followed precisely for the best results and for safety reasons. Drain cleaners can damage drains, especially if used repeatedly, so it is prudent to try other methods first.
Other methods that may prove effective at clearing shower floor drain clogs are pouring boiling water down the drain, using a plunger or using a mixture of baking soda and vinegar to loosen the clog.
A good drain protector keeps hair and debris from entering a shower floor drain. This helps to keep the drain from becoming clogged in the future.