I’ve used about half a bottle so far, maybe. It works for what we need it for so far. Have not tried anything worse than an average smelly load of laundry but I’ll update the review when I try.
One of my two Golden Retrievers threw up on my family room sofa. Oh what a stink! The dry cleaner said their processes don’t remove vomit odor. So 3 washings later, trying all products I had in the house, I thought my sofa needed to go to the curb. Then coincidentally I needed another bottle of Zero Odor Pets. I saw their advertisement for Laundry, and couldn’t order it fast enough. One wash. Followed instruction. Odor gone. The cushion covers look perfectly clean too. No discoloration. I’m so delighted!
Zero Odor® Laundry Odor Eliminator Concentrate, 16-ounce
It works great. I had to use more - maybe double the amount recommended. But let items soak before running them through the wash load. The mildew odor is gone! I would purchase this stuff again. But what I have will last a good long time ! Very pleased with this product!