At Fermilab they used a ferret (in a diaper!) to clean out the beam pipes: https://www.atlasobscura.com/articles/felicia-ferret-particle-accelerator-fermilab ht

At Fermilab they used a ferret (in a diaper!) to clean out the beam pipes: https://www.atlasobscura.com/articles/felicia-ferret-particle-accelerator-fermilab https://www.atlasobscura.com/articles/felicia-ferret-particl...