These are just ok! My son is only 8 months old, but LOVES baths.
These do an OK job of coloring hthe water - he really likes to see the
colors and swish water around. They don't stain the tub, which is also
pretty nice. I think, though, you could probably get the same effect
with a small bath bomb or similar. They just aren't as cool as I remember
them to be when I was a kid!