Do dog puzzle toys actually tire a dog out?

Across the dog-training communities we read, the consensus is that scent- and problem-solving work provides meaningful mental enrichment that can settle a bored or anxious dog, with several r/Dogtraining and r/puppy101 commenters noting sniffing and foraging are genuinely tiring. The caveat reviewers repeat is that many puzzles get 'solved' in minutes by clever dogs, so rotation and gradually increasing difficulty matter more than any single toy.