Product containers are absolutely worthless. After being "snookered" in by their advertising I bought four. The longest any one container lasted was less than two minutes using very little water pressure. Despite following recommended procedures, there was no influx of new grass. This stuff is a joke. I will consider my mission accomplished if I persuade just a person not to buy. Hopefully more, a lot more.
Pros and Cons:
Bottom Line: No, I would not recommend this to a friend