i have heard this my whole time with snakes, but hasnt worked for me. i had a drawer system (not freedom breeders but similar), and a couple of the wc's that have been nasty i have had, i personally did better with them opening a drawer enclosure. for me, they just get caught up in the lips of the top and bottom of the cages when trying to pull them out through a front door enclosure. but that was just me
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retic is king of kings

1.0 Tiger Retic
1.0 Albino Tiger Retic
0.1 Striped Tiger Retic (het albino)
0.1 Salmon Boa
1.0 Albino Boa
0.1 False Water Cobra