We have pea gravel all around the pool. It is terrible trying to keep the weeds out. I usually try to force one of the kids to pull weeds. It is a punishment that I like to use. You know like when they breath too loud or blink too much, I punish them with weed duty. LOL, not really.
Anyways, this is what the side of the pool looks like after a few weeks of not weeding. Not too bad, ehh? I took the leftover driveway salt from last winter and spread it thick the beginning of the season. It worked like a charm. Just make sure not to put it down if you are expecting a huge downpour. I spread the salt and then just wet it. This would work anywhere that you didn't want anything to grow.
I do have my moments
Have a great day,