Can elector psp expire?

[Blonde2002]

I called the manufacturer and they said there isn't one. The vet on staff said as long as it's stored properly and shaken periodically it should be fine. There are different dosages depending on what kind of mite you are treating so maybe you should treat using the stronger dosage?

 

[Linnre]

I am having to do this for the first time. I bought a 10 ml bottle on eBay 2 1/2 years ago. First time to need it. I’ll use it but I wonder if I should order more. It wasn’t cheap even for this small bottle.