Open bag of readigrass. How long?

How long would you feed an open bag of readigrass for?

It's just occurred to me that we're using a bag that got delivered and opened just before Xmas! I don't give them it very often, obviously lol! It's in a cupboard which is bone dry and not overly warm. The bag is also wide open.

Thank you

When we had a huge sack it was open and in use for months and months (we don't get lots either).

Does it say anything on the packaging about a best before date or use within xx long of opening?

It's so dry that if it looks and smells fine, I would use it

Thanks, Sparky. I did have a look at the bag and I can't see anything on it.

It seems fine to me and it did cross my mind that Molly and Junior would soon let me know if it was off but wanted to check

I agree.