My dog chewed up a HotShot Maxattrax Ant Bait?

My male Yorkshire Terrier (about 10 lbs & ~ 1 yr old) got a hold of a HotShot Maxattrax Ant Bait containing 0.05% of Indoxacarb as the active ingredient. He initially chewed it up around 6PM this evening and only had it for about a minute before we realized what he had and took it away from him. He did vomit around 9PM and seemed fine afterward. Around 10PM he knocked over the garbage can and got at it again! This time he only had it for about 2-3 minutes before I caught him. He is sleeping now and seems fine, but I am still worried. He didn't ingest any of the plastic, so I am not worried about complication associated with that. Is there anything I should be doing for him? It 11:30PM and the closest animal hospital is at least an hour away. Will he be OK? I plan on calling the veterinarian in the morning, but need some advice to get through the night. Thank you!