A couple of months ago I was in Houten on the pigeon show.   
They convinced me to use birdy-health in combination with birdy-sil plus. 
It was really new on the market. The products prevent young bird sickness and tricho drastically. I have to say I am really satisfied from the products. My youngsters did never train that well.  They told me birdy-health and birdy-loft spray is working well against adeno, tricho and coli.   
www.birdy-products.co.uk