MOST LAWN SERVICE COMPANIES OVER SELL AND OVER TREAT.  TO GIVE GRASS THE MOST IDEAL GROWING CONDITIONS, IT NEEDS 3 THINGS.  NO WEEDS TO FIGHT WITH, FERTILIZER, AND WATER.  MOST OTHER SERVICES OFFERED ARE GOING TO MAKE A MINIMAL DIFFERENCE COMPARED TO THOSE 3 TREATMENTS.  LET US HANDLE THE WEEDS AND FERTILIZER, YOU TAKE CARE OF THE WATER.  YOU CHOOSE THE FREQUENCY OF TREATMENTS.