How Long Take Topper Off Truck Help Getting Rid Of Cat Dander?

Help Getting Rid of Cat Dander? - how long take topper off truck

My friend is very allergic to cat hair to clean In Trying To Get rid of it out of my room. I use to keep cats in the house, but since I began attending HES is a cat inside / outside and was not allowed in my room last month, but am now really in cleaning my room. I washed the sheets and blankets and clothing lay on the floor was washed and placed on the floors are vacuumed and now I'm on the mattress, pillows and mattresses. How can I clean? The pillow is a pillow of feathers. Even if you know a good detergent in my room and so clean? It is also true that the impact of dandruff disappear with time? If so, how long does it take?