I bought Hydro Mousse at my local store. I used it to cover areas with no change in color or visible seed. It turns out, the off-the-shelf product isn't ready to use as the container has a bag of seed and dye packet inside! I thought it was ready to use! I later bought a large refill packed, this time emptying the seed into the container along with the dye pack. This time seed distribution was visible, but no mousse. Instead, the water turned green only after the seed has been distributed, to compound matters, watering is required three times daily. In an area where water use is costly, what is the point of the supposed "water retention" product? Disappointed, and out $40!
Bottom Line: No, I would not recommend this to a friend