AMI PARTS Humidifier Cleaner Float Submarine for Warm&Cool Most Humidifiers and Fish Tank, Purifie Water, Soften Hard Water, Prevents Hard Water Build-Up, Universal Humidifier Tank Cleaner (9 Pack)

These are awesome, and cute! My humidifier was leaving a mineral despising film, and this totally got rid of it. They stay in all the time, super easy, and when I deep clean the humidifier overall it’s much cleaner. I’ve had them in for a year now and a great price for much less clean up

Great price and does the job!

They are floating in the water, i hope it work like its described that softening the water. Cheap, nice, cute. My toddler love them.

Ok, what I wanted

I got these to help with the white dust from the hard water in my humidifier. They help a little but not that much. Our water IS really hard though & that's even after I filter it. I probably will try something else next time because I don't think this kind of thing will help keep the calcium and mineral particles from creating that nasty white dust.Another thing is that they don't come in a sealable bag.

Love using these.They work perfect in my fish tank, humidifier and even in my personal humidifier.Will continue to purchase.

These were cute and half the price of the humidifier cleaner drops so I decided to give them a try in my humidifier. I still have to clean the humidifier out in the same amount of time as I did before I added one of these in there. However I do see vast improvement in 1 area having dropped one in the tank I noticed im no longer finding this white chalky looking residue on my table that the humidifier sits on as I was seeing before I put one of these in the tank. Even after I added this one it took me about a month of constantly wiping around where it sits to get that residue to go away. It's not easy to get that stuff to come off ao if for no other reason I say it was a good buy. I cant tell that it helps much with cleanliness inside the tank but I can easy wash that the white residue is a much bigger deal to me. So id definitely buy them again and I will as soon as I run out. This pack will last about a year id say so it'll be a while but I'll be back!

...in one of the two new humidifiers I bought recently. Too early to know if they work but it's cute floating around in the tank. I might get the sharks next time, lol.