Yes, but if you forget and leave it out overnight it does not seem to harm it…as much anyhow.
The bulb kind seems to become brittle if you let it dry out.
I do that a lot, I was going through 1 every 6 months to a year.
I have had this one 3 years + now.
This one is worth it for me.
If you can keep a bulb type good for 3 years more power to ya.
I own 2 blue labs meters so I can check em against each other for accuracy.