12PCS Automatic Self Plant Watering Spikes Globes,Slow Release Drip Bulbs Irrigation Watering Devices with Control Valve Switch to Care Your Indoor Outdoor Plants (12pcs)

I got these and went and got Aquafina bottles with water. Then when I tried to use the water bottle on it it does not fit the stake. Seller needs to state not he with of the cap, but that it needs the big bottles of Aquafina,I now am going to have to use liter size pop bottles , they fit the nozzle right on, but I would not have brought the Aquafina bottles if I had known that its the liter size top that is needed.I took the bottle descrition as that the bottles would fit. How are you suppose to measure the cap inside open bottle with out buying the water. I tipped a liter size Aquafina bottle at the store to the case I was buying they looked the same size. I just letting you know the liter size is needed , I will use my liter size pop that I buy so I will still be able to use the product.The items themselves are nice durable and appear to work as descriped.Only reason I didn't give the 5 star .

First one piece was broken. Second they don’t fit water bottles. They don’t work and you have use soda bottles but only if you put a hole at top of the bottle. The the water just runs out. The little knobs do nothing to control the flow. Company has a no return policy.UPDATE. Vendor has promised to credit my account.

It is very hard to regulate the drip rate on these. It either drips too fast and the water is all out of the container or it drips slowly and then stops dripping at all.

Product was incredibly easy to use I used the 2 liter soda bottle that I usually recycle and it fits perfectly i put it in the pot to keep my more delicate plants hydrated during heat waves because here in Los Angeles it can get hot fast !!! This product was a perfect buy the price was right and it works as advertised and no last minute running around with the hose or watering can when the temperature skyrockets suddenly... thank you!!!

Works OK. Only complaint is that they require the full size bottles. If you buy the "Walmart" bottles, they will not work as they cap is shorter. Purchase the expensive bottles and it works fine.

I used a 1.25 liter sparkling water bottle. Fit great, BUT you have to put a small hole in the bottom of the bottle or the water won't come out. Physics, duh!!

used 2lt bottle had to strap to plant took a while to adjust flow when got back from vacation only used 1/3 of bottle seems as though drain got plugged with dirt

I received this item quickly and the price wasn't too bad. They are a little difficult to use and set up -- also kind of difficult to find the appropriate plastic bottle.