Slap packs activated during shipping

Hey Guys...we just received some Wyeast Slap Packs and some time between the warehouse and them being shipped to us, 4 packs have been activated (they're clearly ballooned up, a lot). If I brew today or tomorrow are these still good to use at all? I'd imagine that the worst case scenario is the slap packs have been active for about 7 days...

Thanks,
Jess

I have had the same thing happen a few times, so here is my 2 cents..
Firstly they wont explode, no matter how many times I have tried to make one blow up, it wont. Secondly, I have left a smack pack activated in the refrigerator for over 2 weks and still had the batch start, not that I recommend it..

I would contact the company and see if they will replace the popped packages and if not then store them in the fridge until you need them.

best of luck!

-DIG

The problem is you don't know how long they have been active, I would recommend making a starter if you are going to use them to brew. Simply boil up some DME and water and put the smack packs in a sanitized jar with the DME and let it begin to ferment, you should get a very good pitch from doing that as most of the yeast is probably very active right now.