These yeti seem immune.
If I had some tauntaun living here I could put chocolate sauce on them, the Wampa from Hoth would love it.
I've never met any of that strain.
Back when I used to have a yard, when the Yeti started making too much noise I would just take some chocolate-covered strawberries down the block and dump them in the neighbor's yard. Then they'd go make noise down there.
I hated giving up the strawberries, but when the Yeti or the feral cats start making noise, you have to take action.