Chemical.

Chemical. The necessary components (soda and vinegar) can be easily found in each kitchen. 250 g Nahco3 is poured into the plum of the bath, sink, washbasin. Next in the same amount vinegar is poured there. A stormy chemical reaction occurs, by -products of which can splash out of the drain. You need to wait for its termination, and then wash off a large amount of water, decomposed fat traffic jams. When using special cleaning products from the retail network, you need to follow the instructions for their use.