Thus far I haven't seen one insect other than my worms. I'll deal with whatever comes, it's worth it.
On an update note I had the bin apart today, stirred it up a bit and discovered that the cauliflower is pretty much gone. I'm pretty confident that so long as you're buffering acidic things, keeping up with your carbon and perlite additions anything could be composted in these bins. I also noticed a significant amount of liquid in the leachate tray, this is the first time I've had any real amount and I figure it was close to a gallon. I've drained it off I'm not making 20 gallons of teas so I guess the bulk of it is going to go down the drain. I'm going to save back about a cup and dilute it and feed my regular houseplants.
Here's a pic
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