Please, be VERY CAREFUL with drain cleaning chemicals. If your drain is clogged, we recommend that you call a plumber. If you've used chemicals before calling a professional, LET THEM KNOW. These are strong and dangerous solutions and need to be respected if used. Best option is to leave them on the shelf at the home center and call a professional.
Warning, graphic pictures of a burned hand below
https://twodropletsblog.wordpress.com/
Warning, graphic pictures of a burned hand below
https://twodropletsblog.wordpress.com/