It's all about how you want the lawn to look. I take care of the leaves in the spring and yes it puts some brown/dead spots in the lawn, but then that does not bother me. Something will grow after after a few good warm days. I don't treat my lawn with anything and it's really just a bunch of good looking weeds. I mulch everytime I cut the lawn all summer. With that said, after time it probably puts a thick layer of dead stuff on top and if I wanted more then green weeds growing I would have to aerated the lawn. For me I am ok with green weeds. This pic is of my back yard from last summer, no treatments, mulch everything laying on the ground into the ground.
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