Step 1
Rinse the metal pipe with hot water to remove any loose debris.
Step 2
Scrub the inside of the pipe thoroughly with a pipe cleaner.
Step 3
Rinse the pipe again with hot water.
Step 4
If the residue is tough to remove, boil some water in a saucepan. Add the metal pipe and boil for five to ten minutes. Remove with tongs, allow to cool, and scrub again with the pipe cleaner.
Step 5
Rinse well and allow to dry before using.
