It is fairly easy to use a wet vacuum machine if you had used the dry vacuum for cleaning your house. It works in the same mechanism of a plunger but with high power and suction. This article will talk in detail about using a vacuum based machine to unclog your drain.
You need not own one to use it. There are a lot of rental hardware stores where you can find one. Once you have got the machine in the room, here are the steps that you need to follow.