I dont use rawhides.
Bully sticks last 2 seconds with Coco (lab) pretty expensive chew.
I like the Butcher Bones (filled with pb) have beef skin outside. After all inside is gone and outside is scrapped off they literally last for months. Coco has about 6 of them at various of stages of chewing through, that he now has to share with Snoopy. Pretty funny watching them negotiate who's going to get which bone.
Also, love Nylabone products. Kong's are another great toy to play and chew cant' distroy them.