My dh is very allergic to cat hair, and we've been invited round to my dd's friends house to eat. which is really nice, but they have 2 long haired cats and my dh is very allergic, and can hardly breath after half an hour....how do I ask them (politely) to keep the cats out of the way, and to give their house a good hoover?? or, does anybody have any ideas on a homeopathic way of controlling his symptoms? he has an inhaler to use if he starts feeling bad, but its not really the answer