Yeah , some have had success putting a df mouse in a converted plastic bottle trap lying on a heatmat BUT that works for smaller hatchling sized snake ( corns / kings ) .
Maybe a Viv set in the room , next to the wall , with a mouse on a heatmat UNDER a hide or box BUT in the Viv !?!
It may be tempted in there for the smell and the heat and stay in the hide where it's warm ...
Something along these lines anyways ...
Just make sure you've checked all the warm places , towel cupboards , anywhere there are wires and plug sockets , behind TVs , DVD players , HIFIs , gaming consoles , back of fridges and cookers etc ..
Good luck !!
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