Hey, thanks for the quick replies guys. All I can find on this is Cricket Paralysis Virus--how likely is this the thing? I checked the poor dead buggers this morning and some are still lying on their backs, twitching pitifully. I feel so bad for 'em.

BadKelpie:

1. But I did have several batches that ate the Fluker's water and were fine? I had at least 5, I may have had a couple more (I do sometimes add small new batches to half-eaten old batches)
2. Not every batch has eaten veggies. I thought that, so I fed a batch an organic baby carrot and a cracker, and another batch got cubed iguana food (Smelled divine, I don't even know if they touched it. Little green, wet cubes.) The last batch in the new keeper ate parsley, baby spinach, fish flakes, and Fluker's cricket food. Very few deaths.
3. I wipe down the keepers with warm water in which the frog's water cleaner has been added. So, no chemicals. I want to bleach the damn thing today, but I'm afraid the next batch of crickets will croak from that.
4. I know. Crickets do suck. I looked up the dubia roaches and got mad I couldn't get them in Canada. They look like a much better and more healthy alternative for Freckle. We're gonna try some worms tonight, he had a breakthrough and ate 5 crickets from tweezers last night.

Tammy McLaughlin:

The one thing that caught me was the temperature. Could twitching be a symptom of cold-related death? They're taking a long time to die. But apparently I have a little contingent (About 5/6 left, now that Freckle's had his fill) of crickets that are surviving. We keep our house relatively cold. As in, the heat isn't on at all right now. It's morning, probably about 65* fahrenheit. It may drop to 60* fahrenheit overnight, but doesn't get over 71* fahrenheit anymore. When we get the heat going when it snows, we'll be looking at similar temperatures, but with less of a drop.

Should the crickets have a heating pad? I hadn't even considered that they might need more warmth than the ambient temperature could provide.