There was a perfect restraint found WITH Caylee... something that some young mothers learn to use to soothe their crying child from birth, something I witnessed ER nurses and drs do when my screaming child needed stitches: papoose them in a blanket for better control. Papoosing soothes a child...
Caylee was screaming... Casey wrapped her up in the blanket and did what she felt she needed to do to remove Caylee from her life, so on went the duct tape. If the blanket showed any signs of urine and feces saturated into it, it could be considered proof that as any normal body does when the life is being squeezed out of them (defecation), Caylee's body followed that course. (Victims of strangulation/suffocation/and other various forms of being murdered, tend to see the body lose control of its bowels and bladder as the body fights to stay alive).