HG liquid drain opener drain works very safe. Because the product is ready for use, there is much less chance of splashing. In addition, the blockage never worsen, which is in powder or grain products can happen. HG liquid drain opener works very thoroughly and effectively. Of course, the plastic pipes are not affected. Pour carefully 300 ml of HG liquid drain opener in the clogged drain. Leave the material for about 30 minutes and then rinse vigorously with cold water. For stubborn blockages first pre-rinse with hot water and also rinse with warm water. Also bad smells from drains can be remedied with a dash of HG liquid drain opener.