I seeded some hatchling/juvie carpet python enclosures (fairly arboreal planted vivs, similar to what you see in GTP keeping) with temperate springtails and gaint orange (aka spanish) isopods.
Although I removed any snake waste I could, I maintained my substrate without changing it out and felt that the janitors helped with any mold or waste that I missed. Plus it's just kinda cool to see them in there.
They have since outgrown their exo terra vivs, but I continue to use springtails and isopods in my rhac and frog vivs.