I have a trip lever drain in my bathtub. Thought it was the problem, but it's completely out and the tub still won't drain. Any ideas?
Great answers so far.
To unclog the drain in my bathtub, I've occasionally used a toilet plunger by placing it directly over the drain then filling up the tub until there is enough water to create suction.
A few good "shots" / "pumps" should unclog anything that is stuck in there and definitely worth trying before purchasing any liquid drain products.