5255 Fresh Air™ Deodorizer

These are great and need to order 6 packs. They made water fresh and swamp cooler smell new and nice.

No more fishy smell in my evaporative cooler!

I've used this in a little portable indoor fountain (you can't use it with anything pets might want to drink from, though) and in swamp coolers. It's kind of expensive, but you don't need to use the whole cake - I used a quarter of it in my mid-sized cooler, and it has lasted all summer and keeps the water clear. So if you're using it for a mid-sized swamp cooler, a cake should last for several years if you just use a quarter of it each year. It works.

We have a small swamp cooler, and in spite of that, this product made very little difference.

Having a swamp cooler can be really difficult over Valley summers and rolling blackouts. This little deodorizer is AMAZING to help keep that swamp cooler smell away! 10/10Will buy again and again!

Doesn't work at all. I flushed the portacooler out then used this in it 4 times and every day when you turn it on after it has sat overnight it smells bad. Startes flushing the cooler everyday and no smell

Easy to use.

We have an inside of operative cooler, once I put the 1/4 cake in the pan, No odors at all...