putting stuff in the water will not prevent ybs as this is a virus which is transmitted in the air also when pigeons are carrying the virus are sick in the basketthen other pigeons eat that food thats when the spread starts its up to the fanciers who have ybs in there lofts to have a bit of commensence for the sake of other fanciers to stop racing but fanciers still keep sending knowing they have it result is you then have a outbreak of ybs one thing I have proposed in the past to help to try to stop the spread is each fanciers pigeons if possible go into there own baskets on the transporters this would maybe help as if pigeons bring up food then it is only that fanciers pigeons that are getting infected but at the end of the day its up to fanciers to have a wee bit common sense but some aare lacking in this and race at all cost