We these bad boys growing in our yard. Grape hyacinth.
We have some that were intentionally planed in our flower beds, but chipmunks dig up the bulbs and bury them in the yard.
I've been thinking about a lawn service too. Our grass in our front yard is dying and being replaced by crabgrass and a plant with "shamrock" leaves and yellow flowers I think is called wood sorrel. And of course there are the ever present dandelions. Here's a question, would such a service be able to take care of ants? We've had problems with ants building large mounds in our yard and they seem to like to come foraging into the house. Somehow they've figured out how to get in through a vent in the roof and always come into our bathroom. We're having tree branches trimmed back, so that should help.