Yes, I’m talking lawn. But wouldn’t one those devices work as well? What seems interesting is that they give a moisture percentage, which is the same metric Rachio uses…
I got one of these https://www.amazon.com/gp/product/B07BR52P26/ because it was on sale last week on amazon. I’ve not had time to do proper testing yet. There was another post in the last couple weeks that someone else had bought one and was going to test, but I can’t find that post.