You can use a plunger to unclog sinks, drains, and toilets. The key is to use a standard plunger for sinks and drains and a flange plunger for toilets.
Although there are three kinds of chemical cleaners—caustic, oxidizing, and acidic—acidic products, such as Zep Sulfuric Acid Drain Opener, rely on extremely hazardous chemicals and are generally used ...