Product review (5 stars): Cured My Clogged Drain Problems
After many visits by Roto Rooter to clean out my drain clogs in my older house that had metal drains, not PVC, it was discovered that laundry lint from the drain in the Laundry Room was eventually clogging the sewer line junction where the Kitchen & Baths drain pipes meet.  This really works well and will astound how much clogging lint does down the drain.  Would also suggest using with the drain Lint Trapper for more protection.