Welcome! My name is***** am a UC Davis graduate, and currently, a Medical Director of a veterinary hospital.
I am sorry to hear about this concern for him.
Well, I am actually surprised that he is sick at all. Ant poison has very little toxicity to it. In fact, when pets get in to ant traps, often, vets are more concerned about pets ingested the plastic parts of the trap, as opposed to, the bait inside.
So, to be exhibiting vomiting and diarrhea, I do think this is worth a vet visit today for supportive care. I am not confident, at all, that his illness is even due to the ant bait. I think he may be more sick due to the moss itself.
To help settle the stomach
you can use of the following, but not as a replacement for veterinary examination include
1.Pepcid A.C. (famotidine
) comes in 10mg, 20mg, or 40mg tablets.
You can give it every 12 hours. You can give 0.5mg per pound of body weight. So, a 20 pound dog would get 10mg.
2.Prilosec (omeprazole). It comes in 10mg or 20mg tablets.
You can give in every 24 hours. You give 0.5mg per pound of body weight. So, a 20 pound dog would get 10mg
3.Zantac (Ranitidne). It comes in 75mg, 150mg, or 300mg sizes.
You can give it every 8 to 12 hours. You give 0.25 to 1mg per pound of body weight. So, a 20 pound dog would get roughly 1/3 tablet of the 75mg. Even with bigger pets, it is easiest to get the smallest size tablet. Even a 75 pound dog would only need one 75mg tablet.
I would not try to feed him for at least another 8 to 12 hours to allow the stomach to rest. So, ideally, a vet visit is worth it, since I know they can prescribe some good medication for both the stomach and intestinal upset.