Thank you all for your suggestions! I do like the mask idea and will attempt this. I have a spare bedroom and bath where I do not allow the cats for guests who have allergies. We have no carpet, just pergo flooring, which also helps. I vacuumn every day, and have scat mats on the furniture so there is no hair there. I don't know what else I can do. My husband said we will talk to the Dr. about shots for these type of allergies. As far as us just going over their place, we can do more of that, but I babysit daily until the parents are home and they LOVE coming over here. They spend the night at least one night every weekend, and I can't walk through this door before the phone rings and they ask to come over. They live around the corner so it's all so convenient. The sad part is Karley, the sick one, is the one that loves the cats the most. She knows all their names, has her favorites, and goes with Kevin as much as she can to feed the park cats. *sigh* I sure hope this all works out. This has not been a good month for us. Hopefully things will settle down soon.