1.   Can I use Draino or other strong drain cleaners on plastic?

2.   Drain cleaners are designed to be left undisturbed in the drain for at least six hours.

3.   For drains that are slow but not completely clogged, you should look for drain cleaners instead of drain uncloggers.

4.   Liquid drain cleaners are sometimes useful as a preventative measure when used as directed.

5.   Parents place stickers of the bright-green face on household poisons such as drain cleaners and furniture polish to warn young children away.