Grout, a cement-like material used in tilework, can be difficult to remove from drains. To dissolve grout and make it easier to clean out the drain, use any of these methods:
* Vinegar and baking soda: Mix equal parts vinegar and baking soda together until you have a paste. Apply the paste directly onto the grout for 10 minutes then flush with warm water.
* Commercial products: There are many commercial products available that will help break down grout quickly and effectively. Follow instructions on packaging carefully when using these products.
* Boiling water: Pour boiling water into the drain slowly over several hours to soften up the grout enough so it can be removed by hand or with a plunger if necessary.