Hey, I saw your issue and wanted to recommend something. My Tobie loves squeaky balls and the same thing happens to him, he kills the squeaker right away. I found this site, where I get my toys now,
www.lilchewers.com and they have some good squeaky balls. Tobie hasn't been able to chew through one yet. They are vinyl and nice. The site itself is a monthly toy membership, so Tobie gets a new toy every month, but I can select what toys he receives. Anyway, check them out and ask about their squeaky balls.
Hope I helped.