Complex sentence: A drain cleaner is a consumer product or device that unblocks sewer pipes or helps to prevent the occurrence of clogged drains it can also be a term that refers to a person who is employed as a drain cleaner.
Split into simpler sentences: A drain cleaner is a consumer product or device that unblocks sewer pipes or helps to prevent the occurrence of clogged drains. It can also be a term that refers to a person who is employed as a drain cleaner.