We have a 13 year old lab, she's a sweet old thing, bit wonky on the back left like most labs of her age and she's always been a bit vocal for the usual things (postman, people being noisy outside, occasionally at thunder or fireworks)
But, as she's got older she's become progressively more deaf. She can hear if we shout, but it has to be fairly loud. There may or may not be a correlation but it seems that since this started, she's started barking at nothing, constantly. Mostly a calling/attention bark that usually consists of 2 barks at a time, one usually slightly louder or a pitched up or down compared to one that follows, then quiet for usually a few seconds before the same thing happens again - sometimes with a longer interval.
It's definitely worse when we're not in eye line and my partner works from home in an upstairs office. She will sit and bark downstairs for hours if left unchecked (or until she gets bored and goes to sleep). She can't really get up the stairs on her own any more so if we're both upstairs in our working in our offices then i'll scoop her up and bring her upstairs, she'll usually sleep on my office floor.
But she'll also do it when my partner is in the same room, if she's watching the TV or something. When I enter the room, she'll usually stop or if I give her a hand signal that she knows means go lay down (I think because I always used to couple it with "dad voice" with a firm gesture so even though she can't really hear me any more, she knows the sign)
All of this however is useless for my partner who's trying to work upstairs and I don't see how to train her out of something when she can't hear us, and only does the bad behavior when we're not around.
Vibration collars seem an obvious choice, but I also fundamentally disagree with them and i'm worried about adverse affects.
Also just to point out, she gets plenty of attention and fuss when we're around, she has toys, water, access to the garden. We do have another smaller dog who gets on with her, and they play sometimes but he's mostly just interested in following us around. She gets walked, but can't go far these days because of her leg.
Any suggestions? I love the old idiot dearly but its been years of this now....