I always keep my juv chams in a plastic container ä non toxic one
They always seem to notice the droplets on the side, they lick it off. Lol i always go on a good shopping spree to get a perfect solution then it comes to juv's innovate.
It is hard to find the perfect container trust me,you have to make sure its big enough and has climbing space to keep the pin heads on the bottom and not walking in eating your juvs.
Please post a pic of your current juv housing. Everyone gets a look, then gives you bang for buck advice.