Time to sweep away crime

When I heard there are sweeping changes coming, I never thought it would hit home so directly.

Over the past year, I've had 3 brooms stolen¹ from my front garden. These aren't a kind of Stradivarius of the cleaning world, but just plain, cheap brooms. I've never had anything else taken, just plain cheap brooms.

It's a bit of a mystery to me. I'll buy another one and booby trap it.

Hardware store shopping list
1x plain cheap broom
1x reel of fishing wire
1x packet of screw eyes
1x vat of boiling hot oil

Can you guess what it is yet?

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footnote
1- not at the same time