Save your family from harsh fumes and save your pipes from damage by trying something other than Liquid Plumber to clear your drain.
Salt and Water
If the clog is mild, mix 1/2 cup salt with 4 liters of hot water. Pour down the drain.
Baking Soda, Vinegar and Water
Pour 1/2 cup baking soda down the drain, then 1/2 cup vinegar, and cover the drain with a rag for 10 minutes. Pour a kettle of boiling water down the drain to flush. If you have plastic pipes, do not use boiling water; use hot water instead.
Dishwashing Liquid
Squirt dishwashing liquid down a clogged sink. Immediately pour a kettle of boiling water down the drain. If you have plastic pipes, do not use boiling water; use hot water.
Plunger
Close the drain and overflow hole so that you can fill up a tub or sink. Fill the basin with 2 to 3 inches of water. Put petroleum jelly around the edges of a plunger. Release the drain and push the plunger down on the clogged drain and release quickly. Continue until the drain unclogs.