Need a good spraying antibark collar

[EEJLSB]

I have a hound mix with the loudest bark in the world! The citronella spray collar from Multivet does great job of controlling it, but they keep breaking and I can't afford to keep replacing them. I've been using this collar almost a decade now. The first 2 lasted years. The next one lasted 1 year. The next 2 lasted a few months. The durability is getting worse while the price keeps increasing. Does anybody know of a similar product that lasts longer? I won't use a shock collar. I've tried the system that uses high frequency sound waves, but it doesn't work well and my poor cats have to hear it too.