Nah, what you're supposed to do is leave a bunch of easy-to-find ones, and then make sure that there are higher-tech ones that are inside the I-beams in the walls or mixed into the concrete or injected into the bone or something which are harder to find so that the other side thinks they've cleared it out when it's basically impossible to do so, or else they aren't even capable of getting them out at all. Ask the American embassy in Russia how it's done.
Tashy's earnest little face in panel 002 is a joy.
As is Tiny One's shock.
Wait, hold on, Comrade Medium One!You can have these back.Got 'em.Gch...!KRRRSSSSHHHHAnd out they come!KRRRRRRSSSSSHHWhaa....Don't worry about it.Ah, right.They were messing with appliances, you know.FWUMP.The hat, coat lining, down the sleeves, back of the buttons, pipe, inside the shoes...That's not a place where...!KRRSSHHKRRRRRRSSS
GRRRSSSHHHThey're unexpectedly low-tech, aren't they?Oh my, much obliged!