Roach and Mouse Trap.
A single trap for exterminating both mice and roaches by drowning.
The mouse or roach climbs the inclined sides of a pyramidal case, which are roughened with sand for footing. At the top it enters the wide mouth of a suspended funnel-shaped glass vessel and descends toward bait held on an elevated holder below the funnel's narrow end. The smooth glass and the height of the opening prevent it from climbing or jumping out. It falls into water partially filling the case and drowns; a screw-cap opening in the side permits cleaning and rebaiting.
“The case is to be partially filled with water to effect the extermination of both bugs and mice caught therein.”— William J. Webb, from the specification
And the world did not beat a path to his door.