Need help with an insect problem...

[Tofer]

I suggest a test of the food or litter: take a good handful and put it into a jar with a screen lid. If they are inside after a day or so, the eggs are probably in the food. If they're on the outside, you have to check elsewhere.

I'm guessing you've googled for an answer, and checked any appropriate hamster forums? Good luck!

-Tofer