ASPCA Poision Control 800-548-2423
If you think your pet may have been poisoned, your best first option is to contact poison control.
You will need to be able to tell them what your pet ingested, how much, and when. If you can, have the package with you when you call. If they advise any medical treatment, bring the case number that they give you and again bring the package of what your pet(s) got a hold of.