I use "OdoBan" in my final rinse. It makes towels, (and all my laundry) smell fresh wonderful. For stubborn musty odors in clothing, I turn off the washer, and let the final rinse soak for thirty minutes or so.
It is inexpensive ($10 for a full gallon jug plus a 24 oz refillable spray bottle). It has too many uses to mention. It is not a masking agent. It eliminates all odors and kills 99.99% of germs. With six dogs, I wouldn't be without it.
By Erika from Tallahassee, FL
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My 3 year old son got sick and vomited all over our brand new shag carpet. I mean brand new, 3 days old. So I tried and tried to get the smell out; the stain was not a problem, just the smell.