Where have my isopods gone?

[JimO]

I don't believe I have ever seen any of the isopods I have put in my vivaria. I'm sure they are still there and probably dispersed all over the substrate both horizontally and vertically. Some people use them as a food source for their frogs, but I don't see how the frogs can find enough them to make them an effective feeder unless they are being offered in a container.

[KayJoh]

Thanks for that JimO, I am a total beginner so don't know what to expect with any of this.