If you have problems with slow drains, please do not use common drain “cleaners” or “openers” such as DRANO, or other similar products, particularly acid-based products. These types of chemicals are harmful to pipes, and could potentially cause more harm than good.
If you experience slow or clogged drains, please contact a qualified plumber as the easiest and most effective means of clearing drain lines is to snake the line and remove the clog.