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I'm pretty sure they didn't come in the bran. While I don't have any evidence, I'm pretty sure they came in with the chicken feed that I gave them. I had been pouring in the crumbly bits left over from the bottom of the treadle feeder before filling it again. The problem is that I didn't freeze it first. I had added the chicken feed to a colony I had in a very large plastic bin, but I didn't add it to the smaller 10 gallon aquarium colony. The mini-mealworms first showed up in the large colony, then a couple months later in the smaller colony, which sat right next to the large colony. I can't rule out that they simply crawled in through the tops though (and not transported in with the feed). Both containers had openings large enough for them to fit through. I'm now freezing all grain products first. Since I started keeping them outside I've always had a small but stable population of different beetles, but those mini-mealworms were explosive.
Oh, I forgot to add, I don't think many pests will survive the freezer for 24 hours.
That's good info Gallo! I followed your lead and poured the left over powdered feed into the meal-worm tank. I guess we'll just wait it out now...
I'm pretty sure they didn't come in the bran. While I don't have any evidence, I'm pretty sure they came in with the chicken feed that I gave them. I had been pouring in the crumbly bits left over from the bottom of the treadle feeder before filling it again. The problem is that I didn't freeze it first. I had added the chicken feed to a colony I had in a very large plastic bin, but I didn't add it to the smaller 10 gallon aquarium colony. The mini-mealworms first showed up in the large colony, then a couple months later in the smaller colony, which sat right next to the large colony. I can't rule out that they simply crawled in through the tops though (and not transported in with the feed). Both containers had openings large enough for them to fit through. I'm now freezing all grain products first. Since I started keeping them outside I've always had a small but stable population of different beetles, but those mini-mealworms were explosive.
Oh, I forgot to add, I don't think many pests will survive the freezer for 24 hours.
That's good info Gallo! I followed your lead and poured the left over powdered feed into the meal-worm tank. I guess we'll just wait it out now...