![US Fish and Wildlife on Twitter: "Recycled car wash brushes double as bison back scratchers at Rocky Mountain Arsenal Nat'l Wildlife Refuge. #USFWS http://t.co/imf3PmYVpl" / Twitter US Fish and Wildlife on Twitter: "Recycled car wash brushes double as bison back scratchers at Rocky Mountain Arsenal Nat'l Wildlife Refuge. #USFWS http://t.co/imf3PmYVpl" / Twitter](https://pbs.twimg.com/media/BjcIo1WCUAE9t70.jpg)
US Fish and Wildlife on Twitter: "Recycled car wash brushes double as bison back scratchers at Rocky Mountain Arsenal Nat'l Wildlife Refuge. #USFWS http://t.co/imf3PmYVpl" / Twitter
![Bison, 4in I.D.Unica Ring, Blue/Black | Cloth & Material | Parts & Supplies | Sonny's The CarWash Factory Bison, 4in I.D.Unica Ring, Blue/Black | Cloth & Material | Parts & Supplies | Sonny's The CarWash Factory](https://www.sonnysdirect.com/medias/sys-master/images/hae/hb2/9450774790174.jpg)
Bison, 4in I.D.Unica Ring, Blue/Black | Cloth & Material | Parts & Supplies | Sonny's The CarWash Factory
![Columbus Zoo ar Twitter: "American bison Hermie and Clover love to rub on the giant street sweeper brush in their yard. It not only feels great, but it also serves a purpose Columbus Zoo ar Twitter: "American bison Hermie and Clover love to rub on the giant street sweeper brush in their yard. It not only feels great, but it also serves a purpose](https://pbs.twimg.com/media/DPLuPuSUEAI39m7.jpg)