How to keep grubs/larvae in the bowl?

[gtramontelli]

I just got a whole bunch of fly larvae to feed to my bd and she loves them. The thing is, they are able to climb out of their bowl. The bowl is rather shallow, but they seem to be able to climb vertically too so I'm not sure a deeper bowl will make a difference. Any suggestions? If she would pounce on them more quickly it would be no problem, but they seem to be able to scatter a little before she notices and some get to inaccessible places.

 

[DoubleJ]

An exo-terra worm dish comes with a lip that you fit on top that stops them climbing out. I use it when I want to leave supers in my beardies viv.