The clothes inspection is even more bizarre, IMO. There are items that he appears to have alerted to (and threw up in the air) which are not on the list (which the PJ had, not Grime), and items he simply nuzzled which are on it.
The very first item that got him excited was the little pair of blue shorts, followed by the little red T-shirt (seen being worn by Sean in at least one photo). The T-shirt is on the list, but not the blue shorts. His reaction to Kate's white top was not the same as his reaction to her trousers. He was very interested in what would appear to be one of G's T-shirts, but that didn't make the list.
Aside from one pair of knickers, there doesn't appear to have been any underwear. Why not? They may well not have been considered relevant for what they were seeking, but then neither was the toddler's outfit. Could underwear have deliberately not been packed in case Eddie gave false alerts?