Green Lawn treatments have kept the dandelions out of our yard, so the service is effective. What I appreciate the most about Green Lawn is that they always notify me the day before they plan to treat, so I can be sure to unlock my gates and contain my dogs. Green Lawn service providers always remember to close my gates when they are finished, which gives me piece of mind when I go to turn my dogs loose in the backyard again. Much appreciate the service!