Hi everybody. Thought i would give an update on my sneezing and wheezing fluff bums. ( 12 weeks old ) I put Fosbac +t into their water the following day and followed on for 6 days. Viola, all happy and healthy now. Saw a noticeable difference after 3 days! I also kept them all in a warm room as suggested. Thank you once again to everyone who offered their thoughts and advice.