Hello, I'm Brad Young, founder of The Grout Guy and a father of four wonderful boys. Youth mental health is a growing concern, and the alarming statistics of youth suicide cannot be ignored.

Use a grout float (it's a foam rubber pad tool that looks like a trowel) to add grout to the area where you have removed the original grout. Press the float onto the tiles at a 45-degree angle, spreading the grout mixture evenly between the joints.