How long to keep valbazen?

[lovemy6hens]

Does the giant bottle of Valbazen need to be disposed of after worming our 11 hens or can it be kept for next time?

 

[Eggcessive]

It should have an expiration date on the bottle. It can be used until or just after that date. Be sure to shake it well each time you use it.

 

[lovemy6hens]

Thank you! That's good news. I was worried it would lose effectiveness if opened and it doesn't expire until 2018.