Tub Works™ Smooth™ Bath Crayons Bath Toy, 24 Pack | Nontoxic, Washable Bath Crayons for Toddlers & Kids | Unique Formula Draws Smoothly & Vividly on Wet & Dry Tub Walls | Hexagon Grip Bathtub Crayons

Of all the options for bath crayons, I found these work the best on both damp and dry surfaces. The sleeves coming off is a drawback but the trade off is you get more crayons than the ones with the plastic sleeve. These haven't stained my tiles or bathtub but I have found the bright pink and purple colours can stain the grout between the tiles. Although just faint, it's something I've had to accept as a trade off for a happy child in the bath.

My 3.5 year old loves art and is constantly drawing and painting and creating, so this was an amazing find for me! I keep a sqeegee in the bath which is enough to wipe the color off as long as it is wiped while the drawings are wet and fresh. After that, a wet cloth takes it off pretty easily. Red tints tend to lightly stain, especially when left on too long, but that tends to be true for all paint toys. I store them in a hanging mesh bag, which drains the water off between uses. These are used daily, and are holding up really well. They write smoothly and easily and the color variety is awesome! I will definitely get these again!

The most important thing is they clean up easily. I just used a really wet wash cloth and all the artwork my granddaughters made came right off. The truck is wiping the surface clean as soon as possible.

They are easy to use. Lots of colors. Writes easily on the tub and washes away with no problems. Love it.

These are pretty good overall. There are some durability issues. They need to be completely dried after use. Do not accidentally leave one sitting in any amount of water or they will disintegrate.