Maybe you accidentally closed your cat in your bedroom without a litter pan. Perhaps your cat is angry with you for going on vacation and leaving him alone. Either of these things could cause your feline to urinate on your bed, soaking your beautiful feather comforter. Cat urine smell can be difficult to remove if not dealt with immediately after urination occurs. To remove cat urine from a feather comforter, there are a few steps you can take.
Lay the comforter out on a flat surface and blot at the urine spot with paper towels. Blot as much of the urine up as possible and dispose of the soiled paper towels.
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Put the comforter in the washing machine. Add 1 cup of white distilled vinegar in place of laundry detergent, set the washing cycle to "Gentle" and let the comforter wash.
Add a cup of heavy-duty liquid laundry detergent to the washing machine and re-wash the comforter on the "Gentle" cycle. If the comforter is white or colorfast, add one or two caps of liquid chlorine bleach to the wash.
Remove the comforter from the wash, hang it on a shower curtain rod or clothesline and allow it to air dry. Do not put the comforter in the dryer. Heat will bond the protein in the urine to the comforter fibers.
Smell the comforter. If the urine smell remains, repeat the entire washing process. If the comforter still smells after a second wash and dry, bring it to a dry cleaner.