Common insecticides used in ant and roach baits today are boric acid, avermectin, fipronil, hydramethylnon, propoxur, and sulfluramid and have an attractant (often peanut butter), a sweetening agent, and bread.
Low concentration of the insecticide and the small size of the bait no much serious toxicity is expected except for foreign body obstruction from the parts of the container.
Signs of ingestion are usually limited to mild GI upset and do not require specific treatment.