Would agree on that one First encountered salmonella paratyphus many years ago very good stock birds that I had brought in suddenly had swollen wings and some could not get of the floor ,I blamed everything when in fact I was the cause of the whole problem . I had stored a pallet of feeding in my workshop / warehouse with all ok well so I thought until I got near the bottom of the pallet Mice had destroyed it ,There was the answer ,yes treat with baytril etc but they are never right Disposed of all the birds showing symptoms then raced all the young of the remaining hard over two seasons the nests that did not produce birds were also eliminated have to be honest was just left with a select few . Without a doubt in my mind pigeon lofts and food stores that have mice problems will never be successful Good luck sadly there is no fast tract cure Ps all my feeding is now kept in the spare bedroom