The bottom line with all these discussions on the window is simple.
The only identifiable prints were Kate McCanns.
There is no evidence of abduction,any statement to the otherwise is a fallacy.
It has been nearly 6 years now since she disappeared and not one trace of her.
The number of ludicrous sightings occur at regular rates, normally prior to another appearance of the Mccanns in the Press or media, in general.
Probably the crime will never be solved, and as listed by the CFO, it is referred to 'as type of crime unknown'.
The indications of the dogs so far, have been the only possible indication of what could have happened to Madeleine, and having seen the use of dogs in a variety of situations, with a very high success rate, Their use is well founded.
All of this as a result of two parents who left 3 children under the age of 4 to go drinking and eating, for several nights in a row, in what they claim was an unlocked/locked apartment.
That was and is totally unacceptable behaviour by any parent, from what ever background