I have a dumeril. She's 5 months and 28" long. She went a 2 weeks no food, ate 1 feeder mouse, then went 4 more weeks and finally ate a prekilled mouse Thursday night. She didn't start to look skinny or malnourished, she even shed last weekend. I read somewhere they don't need as much food as regular boa, since they just wait for food to walk by, not hunt it actively. What do you use as the substrate? They like to hide under the woodchips and wait with just their head out. Mine never makes an effort to hunt something down (usually). She just waits with her head sticking out, and bursts up when it walks by. She hasn't eaten any substrate either when she does this, I was worried about that. What worked for me was "walk" the mouse around to in front of her, then I made the dead mouse "stand up" on its back legs. She bit it and constrictd and ate it then. I guess you gotta trick them sometimes into thinking its alive.
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Tim W.
http://tsw.f2g.net