Good until you have to change batteries

Worked good for about a year. However I had a similar experience to many other reviewers when I went to change the batteries for the first time. The battery compartment got stuck and was impossible to get apart without breaking. Only happened with the salt so I guess maybe some crystals got down in there. Design flaw. They worked good while they lasted but now will need to be replaced so going to look for a different brand.

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