It's really early in the season for grubs, but if you counted them, then maybe not.

Milky spore has a reputation of requiring years of continual usage to build up a sufficient population of the spores that you can control anything. On the other hand, beneficial nematodes seem to work right away. These nematodes carry an insect disease which infects the grubs. The nematodes burrow into the grubs giving them the disease. The disease kills the grubs in 24 to 48 hours.

I use the Guardian Lawn Patrol nematodes out of Colorado (Google it). Your soil needs to be very moist when you apply. If you apply them to dry soil then you just killed all your nematodes. They need a film of water to move through the soil and find the grubs. I would apply about 3/4 inch of water first, then apply the nematodes with a hose end sprayer, then apply another 1/4 inch of water.

Anyone have a recommendation of which beneficial nemotodes to buy and/or stay away from?

Home Depot carries "Ladies in Red" which have positive reviews on their site. Amazon carries a few different brands with varying reviews but none seem to have a high enough number to make me confident. Dr. Pye's Scanmask appears to be the "best."

Thanks!

You mean in addition to the one I mentioned?

Sorry about that I missed the product recommend!