Mine are in the 'fridge. Can you keep them in the cupboard? After opening?
I usually check packaging after opening to see if it says to refrigerate after opening and follow accordingly.
And wouldn't you know it! My old mate the cab driver picked me up for my job interview last Thursday. He remembered me straight away and asked what he did to upset me to have to drive on the main roads during rush hour traffic. He asked me about my theory test and my job interview that I was heading into town for. He gave me the useless advice of "if it's a bloke interviewing you, then put on that soft American accent, because if it was me, I would hire you just for the accent". Cool, it's two females interviewing me, but cheers for that!

But overall, I'd say the old "in English!" gaff is in the past now.