Ok, I understand.
But I just don't see Rudy as being suddenly soooooo careful. And there are still no footprints going to the bathroom, that would be before he got the towels.
Another thing is, I know Katody also brings up this issue of "no luminol indicators of wiping." Well, how do we know what kind of wiping leaves what kind of evidence? For example, the issue of the bathroom, most of the blood on the faucets and sink and bidet would have, I presume, just been rinsed off with water. Rinsing off with water is not going to leave any luminol evidence of rinsing. Only way there would be luminol is if some of the blood wasn't rinsed off.
As far as wiping, the evidence of the luminol "swirls" from wiping would be from a little blood that is either left on the floor, or blood left on the rag, which is then swirled back and forth. IMO. For example, let's say in a murder they use one rag and one bucket of water - well obviously, the rag is going to have blood on it because the water in the bucket which is used for "rinsing" will get bloody.
Now, let's say instead, they use a fresh paper towel for each spot, such as each footprint. They wet each paper towel, or stack of paper towels added lift, with fresh water from the sink. They then wipe up each footprint in ONE swiping motion from let's say, right to left. Throw that paper towel away. If some footprint is still showing, they get another FRESH paper towel with fresh water, do another swipe right to left. Throw that paper towel away too. Now, if all the blood is lifted off, what blood would there be left to show up in luminol as "swirls" from wiping?
I find the above scenario to have much less risk of leaving residue for luminol to catch, then let's say taking one wet rag and just moving it around in circles. And then rinsing in a bucket of water. Then taking the rag again, moving it around in circles, then rinsing it in the water which is no longer fresh, but instead now bloody.