Whaa.....??? Frozen nute juice? Like popsicles for your mary's? Ok Done
Well I was using tap water and counting the ice as part of my daily top up, but frozen solution is fine as far as I know. I checked those containers. I expected to find LDPE or HDPE for low/high density polyethylene stamped on them; but it's PP, so probably polypropylene.
I used my old GH 1 liter (quart) plastic bottles too. They'll fit in a pretty small diameter opening. I filled them 1/2 full of water and put them on their sides in the freezer. The large surface and small depth of water kept them from popping. I left those ones closed and use them as kind of an ice cube. Pop a few in for a half hour or so and then go fish them out and refreeze them.
A lasagna tray, big pot or small tote makes a great catch-all for accidents in the freezer.