Yeah, I'm very close to the Santa Cruz river, and my soil is very sandy. Drainage is not a problem!Oh, I'm so glad you posted that! I'll definitely monitor those feet. I'm like carnivore's situation where it seems to be completely drying out in the fluffy layer every day, but not so much the bottom, original dirt layer. I'll be sure to keep everyone updated about my results and I'm so interested in how it works for others in the heat and the long run. I really want this to work too. It has changed their behavior so much from how it was when the winter sod failed in June and they had mostly hard-pack soil to work with.