[Inyo-Mono]

They use them in places where they mulch the lawn waste. They can grind up the bags with the leaves and they compost just fine.

OK, makes sense. Where I live the humidity is normally so low, around 6%, that we can't mulch as the dead grass and leaves dry so quickly.

[Paladin2]

"we can't mulch as the dead grass and leaves dry so quickly. "

Turns out that the Deer like both the grass and the weeds. Natural mulching...