Clear a slow or clogged sink, pipe, drain or shower with the best drain cleaners including enzyme and chemical drain cleaners ...

They are also not always as effective on certain types of clogs, such as those caused by grease or hair, and can leave behind ...

When grease from multiple pipes builds up ... But he doesn't recommend using drain cleaning products such as Drano. "We discourage putting any type of chemical down the drain," he says.

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When faced with a clogged drain, you might instinctively reach for a bottle of Drano or a similar chemical drain cleaner. While these products can be effective, they come with a host of potential ...