Hi Julie,
Here you go.
http://www.planetnatural.com/site/xd...e-control.html
http://www.entomology.wisc.edu/mbcn/fea508.html
Getting rid of the grubs is often a great way to control them too, but "treat in the fall if at all". This site has some great info, but do read 'Got Grubs? Count to 10'.
http://www.nysipm.cornell.edu/publications/grubs/
Newt
When weeding, the best way to make sure you are removing a weed and not a valuable plant is to pull on it. If it comes out of the ground easily, it is a valuable plant.