Product review (4 stars): Good Customer Service
Aquafresh was by far cheaper than the other refills. When we  installed a cartridge it leaked. We called customer service and was told that we should try another. That one worked.  We wanted to test the third one but were told that if we opened now it would dry out by the time we were ready to use it. I did have to return the defective cartridge and would be reimbursed for postage which cost $12.00. The company sent me three new ones instead which was much more than my postage. Just hope they  will not have a defective seal.