Last year, crabgrass was a big problem on the lawns that I don't mow. On the lawns I mow, they get mowed properly as well as I am there every week to keep an eye on things. It's the fert only lawns that I seem to have any real problems on. After the hot and dryer than usual summer we had last year and by the time round 4 came to, many lawns had gotten out of hand. That prompted me to add an extra round to show up on a customers lawn this year. I added a 6th round. This got me on each lawn every 6 weeks. I didnt receive a single complaint from a customer. The truth is, none of my lawns really need another app but I do want to be on each lawn every six weeks. I don't want to just put down an app, but want to go spray for any weeds, crabgrass, nutsedge. Check for bug damage or fungus issues. I could lay down something like Milorganite but would be way too costly to apply at the same cost of an app. To put down the same amount as the cost of an app doesn't seem to be of that much of a benefit. I guess basically I have already contracted with each customer to show up to apply an application. I just want to make it to their lawns best benefit. Make it worth the price that they are paying me to be there. Any suggestions?