James Alexander Williams suggested in his patent, that his invention is not only suitable for fighting mice. Demonstrating true Texas hospitality [He was Texan], Williams recommended use of the handgun trap as a clever house alarm to be put in doors and windows.
Mousetrap patent US269766A
“Don’t worry honey, in 6 to 18 months, and for only 200 dollars per trap + the cost of the gun and ammo, I’ll have our mouse problem under control”