Here are a couple of places- to show what a Turf King Lawn Care Program with regular applications of high quality fertilizer and regular weed treatments with an iron product like Fiesta weed control can do.
Not that the lawns are perfect- but these photos show that there is a difference.
Keep dandelions and other weeds from taking over your lawn.
See this article on weeds- Avoid Unsightly Weeds with Fiesta