This is a test of commonsense with single/multi-choices. Complete the next sentence:

How to clean a wood pipe
Run a pipe cleaner through the pipe before you use it.
Even if you have cleaned your pipe after the last time you used it, you should always clean it before you smoke it. Take a pipe cleaner and run it through the pipe.

Select from the following.
--This helps get rid of any remaining ash or dottle. Gently knock the pipe in your palm to get the debris from the bowl.;
--Repeat this every few hours to keep up with cleaning time. Wax the pipe when you are finished using it.;
--This will help remove any pollen stuck to the pipe as you smoke. If you do not have a pipe cleaner, you can purchase a pipe cleaner from a hardware store.;
--What's more, if your pipe is in a bowl, run tap water through it instead. Sit your pipe cleaner or water bottle upright and open it.;
The answer is:
This helps get rid of any remaining ash or dottle. Gently knock the pipe in your palm to get the debris from the bowl.