Hard to have a nice yard, when neighbors have a Dandelion Nursery!

Just run your weed killer over on his yard a bit. Your nice lawn makes his look like crap. Good for you. People plant flowers for the bees and butterflies. Dandelions aren't noxious weeds but they are nasty. With 150-200 seeds per flower it doesn't take many to spread fast. They are biannual so what sprouts this year blooms next year.

Dandelions are NOT an ideal food for bees
Dandelions lack vital amino acids and nutrients that bees need. They simply are not a quality food source for bees. Pollen from trees like willow, maple, and fruit trees is a much higher quality nutrient source.