The marmite lathered toy no longer works. BUT I have found something that does work, it is called
Pet Corrector.
This afternoon, my wife and I took Chester to a country park. He knows this route and usually starts to squeal/yelp/yodel at a certain location. When he started to squeal I let loose a short blast of air, not at him but pointing down. (It is the hissing noise that works not the blast of air.) He immediately became quiet and I then rewarded him with a treat - for being quiet. Ten seconds later he started up again. So I repeated the exercise.
This was repeated another four or five times, until we reached our destination. What was a nightmare journey is now bliss
However; when I took him out later in the day the safety ramps on the road near the local park I take him to were still a trigger for his yodelling. I had to give the pet corrector 4 goes before he became quiet. And as I was by myself I was unable to reward him with a treat and the reward was just me telling him he was a good boy. But he was quiet.
I have been told that dogs require 30 repetitions (
Leerburg ) so clearly I have work still to do. But it seems that this high powered hiss, works, at least for me and my dog
Some details from the web site about the product
:
Snakes, insects and birds such as geese, use their hiss sound to drive off predators and our domesticated pets have an instinctive sensitivity to this sound.
The Pet Corrector emits a hiss of air which mimics this sound, to interrupt undesirable behaviours in dogs such as jumping up or stealing. There is a detailed training guide included, with helpful training tips and key dos and don't's. It is important that the Pet Corrector is used responsibly and that alternative desirable behaviours are rewarded.
(I have no affiliation with this company, I share this simply for information.)