Never plunge if you recently poured chemical drain cleaners down the sink. Plunging can splash these acids onto your face, eyes, or skin.
In these cases, the clog may be deep in the main trap or caused by a solid object (like a broken utensil) that plunging cannot dislodge.
Failure to seal openings destroys the necessary pressure vacuum. 3. Position the Plunger Use a flat cup plunger, not a toilet flange plunger.
