Comment on Professional Water Removal Service: The Best Way Of Protecting Your Home And Family by Question Everything.
Aside from the 'basics' of rat prevention (after 4.25), is there any evidence for this?
black pepper – this might make sense, as would chilli-pepper.
owl feathers – How & where do I get these?
BTW, rats have terrible eyesight, so it won't be the sight of them. Rats have excellent hearing.
A quick search revealed nothing of interest (i.e. evidence), just repeated baseless claims. I suspect this is almost certainly total bullshit. If any of this was actually effective, we wouldn't have any rats, but we might not have any owls.