During my recent overseeding exercise I noticed quite a few grubs. I did put down Milky Spore in July, but that takes a while to work, and also only controls Japanese beetle grubs. Some of the grubs I've stumbled across don't appear to be Japanese beetle grubs. My question is, should I apply some sort of grub killer now, or wait until the spring? If the answer is to apply it now, what should I use that will be safe on my new grass, which is roughly about 3 inches high. I'll probably mow it for the 1st time either later this week, or next weekend. Thanks in advance for your help.