Thank you, Alice for that. That is a really good one. Pronounced Batista. But see how easy it is. Even this Thread is incorrectly titled.
However, I do find it difficult to see The McCanns walking out with large quantities of Bleach, to go unnoticed, even if they did pay with cash.
How not to draw attention to yourself in one easy lesson? !
I hadn't reached as far as bleach; I was just thinking it if they paid in readies it would be difficult to prove they bought so much as a bag of Haribo Ositos for the kids.
Going off on one for a bit as is my wont:
1) One presumes the Drs McCann are not idiots and know a bit about chemistry.
2) We know with reasonable certainty they could not understand the Portuguese language in either its written or spoken form.
3) Taking 1 as fact they would know enough that a chlorine based bleach would not do the job thus they would need an oxidant.
So far so good.
How to buy an oxidising bleach?
IMO no one can be that much of an anorak about bleach they would know from trade names which was which.
Neither do I see the good doctors standing blocking up an aisle with an interpreter who is reading off bleach bottle labels to them. Or better yet the good doctors taking the top off a few bottles for a sneaky "nose test" but that would be unreliable and I am sure someone will drop by shortly to tell us why.
http://www.exploreforensics.co.uk/detecting-evidence-after-bleaching.html