Children confuse poisons with safe items. Many poisons look or taste similar to other things. Medicine tablets look and taste like candy. Antifreeze tastes sweet. Red mouthwash looks like fruit punch.
Children imitate adults.
Children want to take medication, clean house, paint, and spray chemicals, too. Set up safe storage areas. Potential poisons should be up high in cabinets located up high with safety locks. Use child-resistant caps. If the caps no longer work, replace them.