Best way to unclog bathroom drain?

DYNAMITE

Go to a good Menards or Home Depot. Usually they have a "major" one for every county that acts as a distribution store. They usually carry these heavy duty drain cleaners that are sealed in plastic bags and labelled poison. They contain sulfuric acid and other dangerous chemicals and they're almost double the price of Draino Max. Get a small bottle, they recommend just using a cap full of the fluid to unclog your drain because it is so strong. You also have to make sure that the room is well ventilated, less you want to inhale poisonous fumes.

1. pour baking soda into the drain, push it in there.

2. pour vinegar into the drain, let it bubble for 15 minutes or so. add a little more vinegar if the baking soda isn't all gone yet.

3. wait about 10 minutes, then pour boiling water down the drain.

buy a gallon of vinegar for a few dollars.
buy baking soda in bulk in the cleaning aisle.

your drain will sparkle.

Thanks, I'll try that. I have a gallon of vinegar but will have to buy baking soda.