This story is 63 years old. When I was a child living in a little town in Vermont..in 1950 or so, in a house that had been built in about 1807: We had mice. The final solution was a poison that was smeared on pieces of bread and left around which the mice seemed to like.
Once the mouse took the bait, he would get
VERY Thirsty and need to find water. If no water was found in the house, (The key) he would leave the house to find it. We had a stream maybe 100 yards down behind the house. The mice would head down there..so we thought..OR.. wherever..And
take the water. Taking the water was the final
element/catalyst required in the mouse's demise.
Bottom Line: The mouse left the house to drink the water and die somewhere else. No more mice and no smell of decaying mice in the house
That STUFF was SO Effecient...it's probably illegal today.
NB