Back in 2009 there was a rash of claims that one particular band of chia seed, Anutra, sometimes contained bugs.
One writer stated:
I just recvd my Anutra (ordered thru Ebay). When I opened the container it gave a little pop and on the inside top of the rim there were webs (I still have the napkin with the webs on it to prove it). Also, there was a small greyish/beige bug with wings, which literally fell apart when I tried to spoon it out.
EEW! I'll bet it was an Indian Meal Moth like this one:
Indian Meal Moths can infest your pantry, especially the grains and flour. The larvae will wiggle around and try to look like grains of rice, but if you accidentally cook them, they float right to the top of the pot and you can skim them off. Not that I've ever done that!!
I have to admit that I've sometimes had Indian Meal Moths in my chia seeds, but ONLY after the open container has sat on my shelf for quite awhile. I've never found them in the whole seed, only the ground seed.
I suspect that the writer above purchased old and previously opened seed on eBay. That's a good reason not to buy food on eBay.
Anyway, a different guy, Jesse, really went crazy with this idea of bugs in Anutra:
http://anutrahasbugs.blogspot.com/
http://anutrahasbugs.wordpress.com/
(Some suspect he was a distributor for another brand of chia seed.)
Anutra was just another brand of chia seed, this one marketed by a Christian businessman, Angelo Morini. I haven't tried this brand, but since I haven't heard anything more about bugs in the last 10 years, I'm sure it's fine, although no longer sold on Amazon.