how many of you Ware a mask when cleaning out you birds. all the pigeon dropping that dry and turn to a fine dust more so in dry weather.also the bloom that comes from the birds when in good condition. all of which will sooner or later put an end to your racing or keeping pigeons in later years. how many of us know fanciers that have had to cut short their pigeon keeping due to the amount of the crap that thy have breathed in over the years. as for the masks thy are not very expensive . to any newbie reading this it is one tip you dont see very often when starting up . so start wearing one early it soon becomes a habit