If you have horizontal cabinets in your home that you don't want children to get into, firmly attach hair ties or rubber bands to the knobs or handles to keep them closed. This is especially excellent for places like under sinks where you might keep cleansers.
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I am all for kid-proofing a house when they are full-time residents. But after they are gone, you don't need to do all that anymore. What might be a part time/temporary solution?
When my Grandson was learning to walk he fell against the wall and bumped his head. I came up with the idea of putting bumper pads on the walls of his room. . .