[thih9]

What are your criteria for "method working"?

E.g. your dog would recognize an object that smells like the part of her that you rubbed. Your dog would also notice that it is a static scent, with an age of 1-2 minutes, that continues to fade. Your dog would also recognize your scent (you held the mirror), the scent of the mirror and perhaps some other scents in the air.

Would you count this as "working" or not?

[genman]

Right now my dog is completely numb to mirrors. I'm curious what would make her at least to show some attention. So perhaps there should be a scent dispenser behind the mirror?

[thih9]

Note that we are numb to fire hydrants. I guess we could smell them, but it would’t tell us much.

Meanwhile a sniff of a fire hydrant tells your dog how many other dogs have marked it, how long ago, where did they come from, how old were they, what were they eating, were they healthy, etc.

I don’t plan to sniff fire hydrants though; and for the same reason your dog won’t be interested in mirrors.

Unless they are actually using sight; e.g.: if you’re silent, scent is not a factor (very difficult to achieve), your position is unknown to the dog and someone has placed a mirror so that your dog sees your reflection in that mirror, and you wave - then your dog might spot you and go investigate.

[genman]

My dog clearly is interested about visuals of other dogs but her mirror image doesn't impress her at all. The test you proposed would be interesting.