Reduces Thatch Buildup
Contrary to the myth that clippings contribute to thatch, the thin layers left by mulching mowers decompose quickly and actually help break down existing thatch mats. Thatch itself is a buildup of undecomposed stems and roots, but fresh clippings encourage the microbes and earthworms that digest thatch, keeping it in check.
I used to dread thinned, spring-thick thatch choking my lawn—until I started mulching with every mow. Now, thatch levels stay balanced, and my mower glides through the grass instead of jamming on clumpy layers.