I have 2 little puppy power chewers. Pic for reference. Bowie, the red one, is a chihuahua dachshund mix and weighs about 15 lbs. Sophia, the brindle one, is a schnauzer, poodle, pitbull mix and weighs about 18 pounds. They chew through most things so quickly. These will last them a good solid 45 minutes to an hour. I love the quiet time. They do smell pretty gross, but I overlook it for the enjoyment my pups get out of them.Most chew treats I have bought for my 3 year old boxer fit into two categories. 1) He swallows them before it is safe to do so and 2) He won't chew them because they are too hard. These treats didn't fit either category because he chewed them, which cleaned his teeth and he didn't swallow them. (I wouldn't leave him unattended when chewing regardless.) Bonus, his breath smells better!These were great for keeping my 5 month rottie busy. Took her about an hour to get through one. My 7 year old GSD however got through one in about 5 minutes. Great treat depending on what you want it for.They definitely keep on going up in priceBulldogs who LOVE to chew. Lasts much longer than 8” rolled rawhides & I have quiet time while they chew away.Dog likes it but they really smell terrible.I have a chewer and he loves these. I get peace during my TV shows with him gnawing away!