My Riley ate (or I thought he did at least, I'll never know) a Dayquil a while back. Poison control told me to give him a teaspoon of hydrogen peroxide mixed with icecream or milk. It makes them throw up. Be sure to give them a piece of bread first so they'll have something to throw up. I ended up taking him to an emergency vet that night and they gave him charcoal to nuetralize the pill. It's really dangerous for them to eat any pills. A trip to the vet is a must, but the peroxide tip is good to know.