So I noticed numerous sod webworm moths while mowing the other day. I have a relatively new lawn and hadn't been treating for insects very well until recently. I started using granular bifenthrin (Sevin) this summer, putting down the first dose in late July which was my first insect treatment ever on my lawn. Reapplied same product again around August 15th. After still seeing webworm moths the other day, I sprayed Spectracide Triazicide on entire lawn which has a different active ingredient (gamma cyhalothrin).
Long story short, I think I missed the window to treat grubs and may just be seeing the adult version of the web worms flying about. Where do I go from here? Keep on monthly bifenthrin or should I throw something else in the rotation? I just want to rule out bugs for the year as much as possible and maybe get the timing right next year.
Long story short, I think I missed the window to treat grubs and may just be seeing the adult version of the web worms flying about. Where do I go from here? Keep on monthly bifenthrin or should I throw something else in the rotation? I just want to rule out bugs for the year as much as possible and maybe get the timing right next year.