Adult dogs may slow down, but that does not mean any toy will work. I have a cocker spaniel who can destroy any toy that squeaks, or close to any. Vinyl toys soon get holes chewed in them, then pieces disappear, so she is not allowed to have vinyl toys. I fear some large piece will be ingested. Fuzzy toys that squeak have one or more plastic squeakers inside of them. She chews a hole, pulls out the stuffing, and removes the squeakers. In one instance she took eight squeakers out of one toy over a period of about a about a month.
We did find a football made of the same material as a tennis ball with a small hole to cause it to squeak. So far she has destroyed one, but another has survived for years and become her favorite toy.
Actually, all she plays with are tennis balls, footballs, and flattened formerly plush toys that she altered by removing the stuffing.
Rope toys are either untied or chewed into pieces immediately.