Here is the article about clothing for dogs, that says police had nothing available until some were delivered. So if some items of clothing were left behind, why couldn't police use those? Were they washed clothing, not the one Dylan was wearing while flying to his father's?
"None of Dylan’s belongings that could carry his scent was available in the first days of the investigation. But the family had articles of the boy’s clothing delivered on the weekend."
http://durangoherald.com/article/20121126/NEWS01/121129702&template=mobileart
"None of Dylan’s belongings that could carry his scent was available in the first days of the investigation. But the family had articles of the boy’s clothing delivered on the weekend."
http://durangoherald.com/article/20121126/NEWS01/121129702&template=mobileart