My rabbits don’t touch the “chew” blocks. They like to chew on cardboard, pine, and wood. They have plenty of toys but they still chew the inside of the legs of their wooden house and the wooden ladder – because they are rabbits and they like to chew. They don’t know that “chew toys” are for chewing, and rabbit houses are not. It’s part of being a rabbit. Definitely give them more wood and sisal chew toys, and things to toss around, and while that will help distribute the chewing – it won’t eliminate it. I used to give my outdoor rabbits empty plastic flower pots to throw around. Rabbits are chewers and diggers by nature. We can give them appropriate toys, which will limit the undesirable chewing/digging, but we can’t really expect it to go away all together.
In a few cases, some people can say that their rabbits are perfect when it comes to what they chew. But that would be the rarity. Instinct is hard to change. Of my 4 bunnies, 2 are super destructive, 1 will chew electric chords, and the other used to rip up the carpet corners. They all have plenty of toys and acceptable things to chew and even a sand box to dig in.