Originally Posted by Kiril
I thought donuts were to keep grass from growing over the sprinkler? The only thing that funnel looks like it will accomplish is accumulate clippings and leaves and funnel water to the base of the sprinkler, causing the soil to be even more unstable.
Donuts don't keep grass from growing over sprinkler heads unless they are maintained. My product requires much less maintenance to keep the sprinkler heads visible due to the fact that it is the user that custom fits it to their sprinkler head giving them the only true custom fit. Preventing grass from taking root between the donut and sprinkler head itself is the key to low maintenance. Similar products don't do this and require much more maintenance for them to remain effective long term.
As far as grass clippings, they shrivel up and disappear just as they do in your lawn now. Leaves do accumulate but they are easily removed. Actually the vacuum of the mower decks going over them often picks the majority of them out of this funnel. lol Once this funnel is installed, it doesn't retain water. All water gets absorbed by the surrounding ground just as it would without the funnel.