If Debb replies here, I'd listen to whatever she says any day over me. I'm using it because she had talked about it a while back, so it all goes back to her anyway. 
I get the hay cakes from Oxbow (timothy hay), grind them up a bit to loosen the cakes in a coffee grinder, and sprinkle them into salads. I don't use a dry food bowl since they kick it full of substrate in about two seconds. All dry foods (seeds, grass, lentils, etc) get added to salads as toppers. I also found they wouldn't eat the hay by itself - they mostly eat it as it sticks to the damp greens and squashes.
Don't know anything about Bermuda grass.
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Torey
Eugene, Oregon, USA
1.1 Saharan Uros (Joe and Arthur)
3.0 Mali Uros (Spike, Turtle, and Tank)
1.1 Ornate Uros (Scuttlebutt and Shazzbot)
0.1 Collared Lizard (Rorschach)
2.1 Green Anoles (Bowser, Sprocket, Leeloo)
1.1 Chubby Housecats (Roscolux and Jenny)
