Loft hygiene does not consist in scraping the loft-floor daily and re-charging the drinkers afterwards. I've seen lofts that at first sight appear to be filthy but which are really models of hygiene. Hygiene does not consist of elbow grease expended in acts of perspiring Godliness but of the creation of clinical conditions in which parasite, bacteria, germ and virus cannot thrive and breed.
Taken from The Ailments & Diseases of The Racing Pigeon
by Old Hand
