Lawn care

I'm the first to admit that I am really, really bad at taking care of the lawn. Besides mowing, which I hate, I have done very little...Well these past few years the dandelions won and I could not take it anymore. I decided to call a lawn care service about 2 months ago to get some help. I selected a 'green' lawn service as I did not want any pesticides on/in the lawn because of the kids and veggie garden. Thus far they have applied two applications and I have to saw the dandelions and clover are both suffering!

A few things I have learn thus far include the importance of aeration of the lawn, overseeding during the fall and letting the grass grow to at least 3 inches tall (does this mean less mowing?).