I have both the white thermocube and a yellow Frost King cube, but they were purchased at least a dozen years ago. The yellow one is from HD. They both work. The air in the space does need to be below a certain threshold before they kick in, so you're sure it was below about 37o when you tested? Using those devices you have to be careful that everything is in the On position even though it only comes on intermittently, and usually when you're asleep. (My friend with the cats set up the Freeze Miser on her faucet and on her last trip I checked it and the water was turned off. It only works if the faucet is on so it can drip when the temperature reaches 37 or lower.)
It is goofy that those things aren't in the store. I looked at my local HD - they could ship one to the house by Wednesday or I could pick one up in the store starting Feb. 3. Really?
Porch pickup was a zero this morning, she forgot to leave it on the porch. I texted, it's there now and I'll go by before my next cat/museum run in a little while. She has a great landmark in the front yard, one of those Little Library boxes on a post. I have a book to add to it, A Return to Common Sense by Leigh McGowan. I read the first few chapters and found it to be clear an accurate description of how US government is set up and how the amendments work, etc., but it's stuff I already learned in school (and should still be taught now). I've wondered what to do with it. Putting it "out there" to do some heavy lifting seems appropriate.
It's cold and clear, very bright today. Fingers crossed it stays this way, no snow because I have too much coming and going to do to fuss with slithery side roads. I'm halfway through freezing those organic blueberries. There are 12 avocados ripening on the kitchen counter to be made into guacamole and frozen. Yesterday Town Talk was particularly full, even as late in the day as we usually go over, and I think everyone had the same thing in mind - getting produce to freeze or can, and other stuff to stockpile in case things go pear-shaped in a hurry after tomorrow. We had to queue in line to reach the checkout for about twenty minutes and had a good conversation with the guy behind us, an inspector with the local office of the Nuclear Regulatory Commission. He is concerned about the threat to downsize the federal workforce.
I'm working my way through those crispy pecans I made a couple of weeks ago (I've also gifted a bunch of them). I weigh out a ounce at a time and find that the sharp flavor of the crunchy nuts is just what I need for a healthy snack. I also found another good very dark chocolate bar yesterday, that I'll pick up more of tomorrow (because it will go away fast, waiting a week or two doesn't work at that store.)