One or two in a tub is enough, but we’ve gone up to 4 and no staining on our fiberglass tub. The color washes away with ease and doesn’t require any extra scrubbing. Love turning the tub water colors.

I have a favorite bath salt that turns the water a deep blue color, but it is on the pricey side. With these munchkin ones, all you need is one for a vibrant color. The are vibrant and you get a lot for the money compared to other products imo.

My son loves these and they help the nights i’m battling to get him in the bath so much. My six year old loves these, and my 3 yr old loves them! I highly recommend you get the toys to put them in or your kid will probably paint and stain themselves.

The color plus the fizz makes them a real hit every time. They play with the little dispenser sea creatures and love putting them in the water, and picking them up to see the color rainfall out. They make bath time alot of fun and my son loves to watc...  Read More

Each tablet only produces a faint color and we ended up using 2-3 per tub. These tablets have an overpowering scent.

Packaging is deceptive. Comes with shrink wrapped sleeves of 5 tablets that were very hard to open. Once opened the product falls apart. Will not buy again.