I use a boric acid-based liquid: Ant-Kil by Protexall, & I think Harris' makes 1 as well. It comes in a little bottle & you drip a few drops near the ant trails, they flock to it & soon they're all gone. Alternately, you can put some in a bottle cap, rather than directly on surfaces. Our house has tiled windowsills, so I just dribble a bit right on the tile. I think I got mine @ the hardware store, & I think some groceries like Publix may have it too. I like it because boric acid is something they can't develop resistance to & it basically non-toxic to humans & pets HTH Here is a link that might be useful: Crazy ant info @ IFAS

I was going to suggest nematodes, but I see you've already found that. That's the only solution I know of. I think these are Japanese beetles. I have LOTS of them; any time I dig new sod they're everywhere and I dispose of most of them as i find them into a bucket of water. The good news is that despite all the grubs, I've never actually seen a Japanese beetle, and I do a lot of gardening (flowers and vegetables), so I don't consider them a problem. If you don't have a problem with the beetles, my advice would be just ignore them and dispose of them as you come across them. Bugs really only become a problem if they bite you or start eating your plants. At least that's what I've come to believe...

Yea ive been fighting this, the only way ive managed to reduce this organically is to mow with a bag in those areas, mow them low and bag all the clippings. And try to get all the seed heads before the seeds drop. Then every fall ive overseeded that area with grass. Alot of that darn weed has gone, hopefully most by this season.

I am curious to hear if anyone has wisdom here. I have had a terrible time with the squirrels here this year! Eating buds as well as blooming flowers.