I agree that it looks better, but it's a risk for you to have in your chameleon cages. They could easily get a piece of bark when shooting at crickets...sometimes they can spit it out, but if they have a cricket in their mouth too, they can ingest the bark. Obviously, that would not be a good thing. The best substrate is no substrate or paper towels that you can change out once it gets soiled or wet.
Kristen
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1.2 c. quadricornis
1.2 c.j. merumontanus
0.0.2 neonate c.j. merumontanus
1.1 r. brevicaudatus
0.0.2 red eared sliders