Ok...slightly different use. It goes without saying that the pwd must not have the mobility or agility to attempt trying to climb over the staircase but....when I was living with dad for 10 months in his house after mum died suddenly I used a stairgate not for his stairs but my bedroom! Dad had good mobility and orienteered himself around his familiar house very well even in the dark at night. He would be up and dressed many times during the night and pace in a circuit around the house up and down the stairs. I got used to laying awake listening to his shoes on the different surfaces to track exactly where he was! Anyway, he would come into my bedroom up to 30 times a night, to ask if I was still alive...he meant awake! Sometimes wanted to get into bed...maybe thought I was mum...it wasn't sexual thing just a comfort thing. However, it meant I was not getting any chance to rest... so I put a stairgate across the bedroom door to stop him coming in, he would try to get my attention from the gate which was extremely sad to hear but I pretended to be asleep and he would trundle off, with me in tears under the covers! However he couldn't undo the gate which was clamped firmly to the wall so very stable. I could only do this because I was absolutely sure of his capabilities, safety and he wasn't at risk of falls on the stairs at that time. Some may not have done what I did but to some extent it solved the problem for a while. Although dad tried to rattle the gate it always held firm for the months I needed it