Review on Waterproof Brown Grout Pen Marker: Tile Grout Colorant and Sealer with 5mm Narrow Tip (7mL) by Duane Kaul

I really wanted these pens to be useful to me but unfortunately I had a hard time using them. My kitchen tile has a light sandy grout. It looks nice when it's clean, but that's not often the case. I have to brush it with a toothbrush many times a year - it doesn't stay clean for long. I always wished I had chosen a darker grout color. I saw these pens and thought they were the answer to my prayers. I tried it in my pantry in a remote area. The grout is quite rough so the pencil doesn't give clean sharp edges so it looked very sloppy like I had my grandkids draw it. Maybe I could handle it if I practiced, but I was afraid the grout would look wavy. lines on my floor. Let's get back to the toothbrush!