Lisa, are you using the yellow calcium quenter stuff from flukers? Cause I have that at the moment and it does not need to be in the fridgeidator (
) but there are some that need to be in the fridge. I have seen that stuff mold before, and you would know if it went "bad" it gets nasty. You are probably fine as long as you don't actually SEE mold. Only fridgedate (i like my make up words) the cricket food that says to do so, and if you are using what I think you are, you're good. 
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-Kristen
0.10 Leopard Gecko (Buttercup, Beaker, Beauty, Blaze, Bubbles, Blinkers, Squiggles, Sandy, and two new girlies who are nameless at the moment)
1.1 Fat Tail Gecko (Bell and Bowser)
0.1 Deformed Leopard Gecko (Gimpy)
0.2 Leopard Geckos that lives at my boyfriend's house, but whom I still pay for food...lol (Dexter and our blizzard, Starlight!)
0.0.1 Crested Gecko! (Piper, it's kinda unisex right?)
Proud owner and operator of a Powerbook G4! Why use windows, when I can use Panther? It even sounds better.