If you look at the MSM videos of when they searched MR's house you will see that the area is all hard surface, so any footprints would be highly unlikely. Someone pointed this out before.
Also, on the FMDR fb page, someone claimed that the spoke to a detective and he stated the dogs tracked a scent. I wish we could get LE to state something about this because otherwise I guess it would be considered rumor. IF LE could give clarification, it certainly would help eliminate whether Dylan made it to MR's house that night.
Could you provide the link please? I cannot find that information on the FMDR page. Thanks!