Prinovox expiry

[Notwotuknow]

I've moved end of 2017 and my stuff was all put in storage. It's has taken way longer to get sorted than expected and I'm still unpacking things.

I've just come across some unopened prinovox for small dogs, but the expiry date was for end of July 2018.

There's still enough pipettes to last 3 months for all 4 of my dogs, (12 pipettes) but I'm wondering if it's safe to use still, or if the expiry date just means it possibly won't be as effective, rather than dangerous.
It just seems wasteful to throw them away, and I'm kicking myself that I didn't find them earlier.

I'm aware that some treatments, eg, frontline for fleas, don't appear to have an expiry date in USA, but obviously prinovox is not the same, although it is equivalent to Advocate.

Does anyone know if it would still be safe to use?

It's not just the money, I'm also unhappy at throwing unused chemicals away as it's not great environmentally, even when done properly.

Really grateful for any advice. Thanks

[Notwotuknow]

Just bumping for any help

[Lonecatwithkitten]

No professional vet/SQP is going to tell you it's okay, because we just don't know.

[Notwotuknow]

Thank you for replying. I appreciate it.