I planted about 18 trees in an area I had no access to water without bringing it in via waterwagon. This was perfect. I first attempted to let the water slowly run from the hose to the trees. What I found was I either over watered or had a lot of run off. I had seen this product and was hesitant bc of the large investment to purchase so many of these items.However, I did as I also have a much greater investment in my trees and I stared using these last week. I am now watering once a week. I use approximately 400 gallons of water to cover all the trees and previously I was using over 1000 gallons and did not get near the results I am getting now. Well worth the investment.