The ArborRain Hydrator puts water into the ground over the root system while minimizing runoff. I used it around a newly planted weeping redbud during this summer's drought in SW Ohio. It worked exactly as advertised and the tree is in perfect health.
Dislike - the "donuts" sprouted holes on its seams and in random spots on the upper surfaces. I could have imagined holes developing on the bottom, but the pin holes developed on the TOP. So, they did not fulfill their function to drip water over a period of hours. Disappointed.
The wide opening made it easy to fill. The low profile and brown color makes it blend into the landscape.
Like the ease of setting up and filing. One problem with it is that you have to make sure once filled that the 2 water exit spouts are not kinked or prevented from releasing water due to soil/rocks, etc. Would recommend for use. C. A. Huntsville, AL
Great product to help with getting new trees established.