anole (chameleon)

Question
Hi Pam:  I've had a well-established, healthy 16 in. diameter terrarium for years.  It has plants, rocks, special large quartz, and amethyst crystals, shells, large and small.  About a month ago, I introduced a young anole, and a green tree frog, and I feed them gut-stuffed tiny crickets.  Today, I took the cover (good ventilation) off to feed "Mathis" and "Pennzoil" and I saw literally what looked like thousands of tiny white ?mites? covering every surface.  The anole is in blue (is that still the correct term, even though he isn't a snake?), and is shedding nicely.  Neither of the critters had the mites on them.  I took them both out and put them in a large tuperware container, and tore the terrarium apart.  I boiled the grape wood I added when I bought them, as well as the other items I mentioned, after washing them in a sink full of hot water, no soap.  I added several new plants, and put everything back together, and the anole actually started cruising around ( he, until the cleaning, had mostly stayed on leaves, as did the frog.)  The frog started puffing out his throat, and singing (beautiful!)  Long story, but I wanted you to know the whole deal; I've lots of pets, but never any like these.  WHERE did these white mites come from?  They weren't present in the terrarium before the introduction of the new inhabitants, and they didn't seem to come with the crickets, as I keep them in a "critter carrier" so I can feed and water them until I use them.  Do you think they came from the anole?  Will this happen everytime he sheds?  Can I take everything out next time and use a light spray of insecticidal soap, and then a new layer of dirt?  Any advice will be greatly appreciated.
Thank you,
Shirley
Forgot one item: no mites in the cricket carrier, so I'm pretty sure they didn't bring them in.

Answer
 Without seeing the actual bugs themselves, I would hazard that they either could have come from the soil, unless it was steamed soil you get in a bag, or more likely that those mites were actually aphids on the live plants.  Aphids are a very common pest in gardens
http://en.wikipedia.org/wiki/Aphid
there are different kinds but the most common ones Ive seen are either white or pale green.