Although I appreciate my husband’s creative suggestion to find some discarded baby gates at garage sales and zip tie them together, I thought the better approach to finding a safe and non-hilljack baby gate for our split-level staircase was to buy one made for that purpose.
It was expensive, but I feel much better about the safety of my home.
Here’s what we ended up with:
It’s great! It completely does the job, and I plan to purchase two more for the top and bottom of the staircase.