Gourmet Liquid Ant Bait contains a form of boric acid. It has the toxicity of table salt. It's possible, that if the pet consumed enough bait, they could get sick. We have never had a report of sick pets or any harm caused by this product. However, you should not be placing it in open containers where they can get to it either. The KM Ant Pro Dispsenser is what I recommend to use it with.