I had bought 3 packets of BF formula blue, which had arrived yesterday. I followed the instructions, as always, and prepared the liquid form, fed some to my ants, then stored it in the fridge. But today when I went to feed them again, I found that the formula had gelled completely. That's never happened before. So I threw it out and prepared the second one. I put it in the fridge and when I went to check on it about 30 minutes later it was starting to gel, too. Can someone tell me what's going on? Why is it doing this? Is this some kind of new product? The bags have a black label instead of the usual orange and I think the powder looks kind of different, too.