Dekay snakes go their whole lives eating worms, slugs, snails...

For the most part they are skinny, small snakes. Some will bulk up with feeding... But they're not a bulky snake in general.

Ringnecks will eat anoles and geckos, anoles are the better way to go, as house geckos (what I assume you would use) have those large heads, and ringnecks sometimes have trouble swallowing such.
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Mike
KingPin Reptiles Inc.
www.kingpinreptiles.com
^ Updated 10/4