Dial Manufacturing 5255 Fresh Air™ Deodorizer

No more fishy smell in my evaporative cooler!

great for cooler

I got this for my swamp cooler because it smelled like wet dog. The directions say to either put the whole think in the water reservoir or break it into 4ths and put a 4th into it. I went with the 4th and put it in. The first day the smell was gone and I thought "Problem solved." However, the very next day the smell was back. It also leaves a mess in the reservoir and in the top. In case you're wondering, I did figure out that if you mix fabric softener into the water, it will take the unpleasant smell out completely. On the other hand, now I have to put something under the swamp cooler to catch the water that leaks out the back. Any who, this product didn't really do a thing to solve the problem of the wet dog smell and absolutely wasn't worth the money at all.

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

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.

The seller needs to take the picture of 10 off the listing. And not mention multiple coming in a package. It's a great price for one and that's all that you get otherwise five stars

This is a must have for any swamp cooler. The fishy pond like smell will stay away if you use this item. I adore them.

It seems to reduce ceud build up from nasty well water. It is with the price in my case. 9 total coolers, change or inspect every 60 days. Bought twice, will buy again. M. R.