Provide advice on how to accomplish the following goal. Give ONLY the advice, no other words or explanation.
For example:

Answer: <advice, as short as possible; a single sentence!>.

Goal: How do I remove hair from a vacuum cleaner's beater brush?
Remove the beater brush from the vacuum cleaner. Carefully use a knife to cut the hair free from the beater brush.
<Soak brush in warm water and vinegar, then remove hair with your fingers or a comb.>