I have two daughter that have a lot of hair. They both take multiple showers a day and their hair clogs the drain. The only thing that would clear the problem in the past was have a plumber come out and snake the drain. My friend told me about Royal Flush Drain Cleaner. I poured it down the shower drain and within minutes the clog dissipated. I now pour it down twice a year for maintenance and have not had a problem since.
June 22, 2017