I just recently retired from teaching high school. I started mowing the last two years of my teaching career. I purchased what I think is the right mowing equipment. The first week of February I will be attending a week long course on lawncare and IPM. I am thinking about treating lawns as well as the mowing. My question is, should I buy a tank and concentrate on treating lawns with spray, or concentrate on using granulars. It looks to me as though the liquid treatments would be the most profitable in the long run. I am located in the northern Kentucky area. Fire away and give me your advice.