Review on 🌱 OZMI Plant Self Watering Insert Spikes: 6 PCS Automatic Drip Irrigation Control System for Home and Vacation Plant Watering by Benjamin Cleveland

From the description and online photos I expected the soda bottle to screw onto the unit. Instead, it just sort of "balances” on it. It’s still too early for outside gardening in my zone so only time will tell if these are worth the money/effort.UPDATE:Just as I thought, getting the bottle to balance perfectly straight up and down if you have good, loose soil is impossible. The spike tips over, the bottle tips over, the water pours out. So I tried propping the bottle. The piece that fits inside the bottle is just too short to hold the bottle upright. Even with being propped up, a slight wind will knock it all over. The next challenge is the drip rate. I either got no drip, or a stream of water, nothing in between. The one unit I thought was correctly propped and a decent drip rate…the next morning the bottle was completely empty so I guess I didn’t have it set right after all. On closer inspection the plastic screw that adjusts the flow was stripped and could be easily pushed in and out so the water pressure popped it outward and the water poured out rather than dripped.I so wanted these to work but NOPE! It’s much easier to carry a water can back and forth across the yard than it is to get these to work. I do not recommend these.