Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Lasts about a week

I ordered four of these direct from Holmes. Together, they lasted a total of 3 weeks. I have the HM1895 humidifier with the filter gauge. The first one lasted a week. The second one lasted a week and a half. The third one lasted 2 days. The fourth didn't work at all, the gauge never got above the "change" line.I've since tried a universal third-party filterBestAir Wick filter fits Holmes H65-ID. This worked for a month, which is the expected life.