Both products *claim* to grow anywhere. If you have used either of them, what was your experience? How well did it work? My back yard is basically a huge sand lot that attracts fleas as well as stray cats that use it as their litter box, but I need a cost-effective solution to thwart these pests... BTW, I can't afford sod, and we have water restrictions (fines are doubled for offenders) here in St Pete. Thanks for your help! Specifically WHICH product did you or a neighbor use?