Well, if it is already applied, confirmation that it will not harm your bees will become evident in the next few days. There likely is not much attractive to bees in your lawn anyways. Those ingredients are common lawn weed control chemicals. They disrupt the life cycle of broadleaf plants, thus killing them. Notice that the selective chemicals won't even harm the grass. Your neighbors probably have it put on their lawns also, so it's not just your lawn that is available to the bees. Don't worry about it, they'll be fine.