I gather it's rare for them to enter homes to abduct. Apparently when they are claimed to have done so, it often turns out the parents were involved in foul play and covering it up by claiming abduction. (This is part of why not everyone believes Madeleine McCann's parents, for example.)

In the Caycee case in the article you linked, the victim was outside, waiting at a bus stop. That is (relatively) more common. So the case you linked to is not an example of what you were talking about.