Install Child Locks
There are a wide variety of child-proof locks that can be purchased at most hardware stores and variety stores for long-term use as your own children or grandchildren grow up.
There are also temporary child-proof locks that can be purchased for use only when you are going to have children visit. They are inexpensive, usually simple to install, and could save you, the child and all family members and friends the anxiety of a child’s unintentional ingestion of unsafe products.
This measure will also keep you from having to worry about whether or not a child “got into” something when out of sight.