First of all, I assume that by "service company", you're referring to a firm
that applies chemicals, but is not involved with the "mechanical" care of
the lawn, like mowing and watering. Is this assumption correct? If it *is*
correct assumption, can you describe how YOU mow and water? By that, I mean
cutting height, timing, how long you water, etc. And, provide your location.
The company you used should have records of EXACTLY what chemicals they
applied to your lawn. Get those records, and then consult with your state's
cooperative extension office to see if the choice of chemicals was correct,
as well as the timing of the applications. There is no real need for lawn
chemicals, other than fertilizer, but if you're hopelessly in love with the
idea, it's important to monitor what's being applied. Some of these Chem
Lawn and other franchisees are not the sharpest knives in the drawer.