human
What are some of the best ways to clean a clogged drain?
assistant
1.  Pour boiling water down the drain, followed by a cup of baking soda and half a cup of vinegar.
2.  Mix equal parts baking soda and vinegar in a bowl, then pour it down the drain.
3.  Use a plunger or a plumbing snake to try and remove the blockage.
4.  If all else fails, you may need to contact a professional plumber for help.