Re: Preventing colds at daycare ??
I second the sinus wash, but what Probiotics are you using. If you're buying store brand or a non-refrigerated one, it's probably useless.
Hands Down the best I've found is Megafood.com Kid's N' Megaflora. You can open the capsule and put it in food. It has a wide range of probiotics...the best.
I also suggest Elderberry syrup and Vitamin C crystals or Chewables (I like Trader Joes...no artificial sweeteners.) I'd give 1,000 mg/daily when not sick and do up to 4,000 mg/day when sick. The crystals are sour, but a tiny bit goes a longggg way!