Hi Rick,
one of the biggest concerns with wc feeders is pesticides. Unless you can be sure about the source (remember that insects travel and so does toxic drift) I would do it only ocassionally. toxins build up within the food web (do you know the DDT/bird eggs example?) and can become quite significant. Parasites can certainly be a problem as well but this is more dependent on the life span and feeding habits of the insect stage you are feeding (e.g. larva vs. adult). It is said that feeding them for three days indoors of your own gutload will help to "clear the gut" of parasites, etc. but as for toxins...well, again - be sure of your source. Just my 2 cents 
lele
>>Have you ever fed wild caught food to your chameleon? I live in east Tx. and have access to an unlimited supply of grasshoppers and other insects. I have been feeding them to my Mellers and rudis, and the babies from my rudis and they seem to love them. They are all fat and healthy in apperance and seem to prefer them over the commercial crickets. I wonder if wild food is more likely to carry parasites than crickets or if there is a problem with doing this that I am not aware of. Thanks in advance for any insight.
>>
>>Rick
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0.1 veiled - Luna
0.2 house geckos - Gaia & Tia (both MIA 
0.2 felines - Kyndra and Líta
1.0 African Clawed Frog (for summer)
0.5 Mad. Hissers (for summer - all girls, no little ones, whew!)