Sick of the unending stream of email and phone calls you receive from scammers claiming to represent your bank? Amazon? Microsoft? The tax office? The police?

We sympathise – we’re sick of them too, especially landline calls that could be a loved one calling for help or advice, and thus need to be answered…

…but that rarely, if ever, turn out to have a familiar voice at the other end.

Perhaps you’re one of the 40,000,000 or so viewers of famous science-and-engineering YouTuber Mark Rober’s video entitled Pranks Destroy Scam Callers – GlitterBomb Payback?

Rober makes some alarming but entirely believable claims of just how much money [a] a top call-centre scammer can make if they hit their on-target earnings and [b] just how much a typical call centre of this sort turns over each day.

If you haven’t seen it, the video starts with the words, “I have 100 cockroaches here, and I placed them in this James Bond-style contraption,” so you can probably imagine how things end.

Despite the not-very-threatening outcome when Rober later releases the insects inside a scam call centre where he has access to footage from the CCTV feed, the video gives a good visual indication of just how industriously and unrelentingly these scammers operate. (When not driven from their work pods by roaches, that is.)