Try this site for some chilling information about a Bayer pesticide that is toxic to bees. I don't know if it's in use here in the US but the farmers will want it. Certainly Bayer will want to sell it.
Dickm. Its right in your back yard!!!!
Merit,Grub-ex,Imicide,Etc.Do a google.As merit,Hemlock wooly Adelgid.Got grubs in your turf,check the bag;call Chemlawn and ask if they're using it.It scares me and I have a supervisory pesticide license.
Jack,CT.Lic.Arborist and Beekeeper