Like the Pipe Surgeon says, if your shower or tub are not draining, the first thing you want to make sure is that it is an isolated issue. For example, if your sink also has a clog it may be a coincidence, but it also may be that your main drain has an issue. You can be 100% certain that your problem is with the main drain if your sink drains into your tub. This could mean that you need to use a drain cleaning service or that a drum trap needs to be cleaned.
If in addition to a plugged shower and sink drain your toilet also won’t flush, then the problem definitely lies with the drain that leads into the bathroom fixtures. However, if the problem is just with your tub or shower, then you can do certain things yourself that may fix the issue.
Just like the bathroom sinks, tub and shower drain pipes can get soap and hair clogs. This combination guarantees that clogs will happen. The scum from the soap solidifies as it goes down the drain. It can also cause hairs to bind together. This mass grows bigger and bigger with every bath or shower that you take. Regularly pouring boiling clean water down the drain can help dissolve this mass, sending it down the drain.
When working with shower drains, you want to use an auger and feed its head through the drain opening. It is always better to salvage the clog than to push it further down the drain. Sometimes it’s not easy to do, and that’s when you want to use the services of a professional such as The Pipe Surgeon.