When I had my pyr which was about 20 years ago. She loved to bark. I got her when she was about 4 months old. The people I got her from named her Barkley, which should have been a clue

I had no luck all through her long life of getting her to stop barking. I never tried a bark collar as I did not know about them back then. One of my Male neighbors eveen accused her of hampering his performance in bed

I told him, don't blame my dog for that!!!
I have a bark collar for my Bluetick Coonhound, which works pretty well, although he has broken about 4 of them. I use the one made by petsafe. You can adjust the intensity of the shock. I got shocked by it and it's not terrible, it just gets their attention. The only reason I use it is because of my crabby neighbors. With a pyr you would probably have to shave a spot otherwise it would not penetrate the fur.