Dear Every Fucker,
It's 2021. Pretty much everyone on the planet has a smartphone, capable of instantly transmitting geolocation data, capturing high-def photographs and videos, and instantly contacting pretty much anyone else on the planet in real-time.
Because of this, it's highly unlikely nefarious thieves will mark your house via a weird combination of hobo sign, cable ties, chalk on the pavement and smoke signals. They'll just take a photo and send it on - or, realistically, they won't bother their arse, because your Audi A4, 50" telly and garden trampoline aren't really worth the risk. And the sinister markings on the pavement will be either the gas board, the phone people or the broadband.
Also nobody wants to steal your dog. Your dog's an ill-behaved ratbag.
Yours
Oicho Throw.