Ok, I went to this topic because I thought the title is "Organic Lawn care". I'm not sure how bashing customer's and professionals who want to have beautiful landscapes without toxic chemicals is helpful. I came here to learn something and to share what I have learned. Clover, is considered a weed by the large majority of people, my job as an Accredited Organic Land Care Professional is to educate my customers. Walking away from this opportunity because it is too hard is a loss for your business. I make money at this every day. Clover can not be beat forever by chemicals, or organics. With time, healthy living soil, and good cultural practices we keep it in check for those who still worry about it. Have your soil tested and come up with a plan. Part of that plan should be: this fall compost topdress, aerate, and over seed. Keep the soil fertil and mow high. Do it again next fall, and the next if that's what it takes. Clover will out run grass when the soil is compact, low in fertility and microbial life. If turf grass does not like the the site and the care it gets, then something else less picky will move in quick.