Daffy Rents is a 1966 Warner Bros. Looney Tunes cartoon directed by Robert McKimson.
[1] The short was released on March 26, 1966, and stars Daffy Duck and Speedy Gonzales.
[2] In this film, Daffy is hired to protect a nursing home from Speedy.
Unfortunately, Herman proves to be no match for the mouse, (and Speedy's overgrown rat cousin, Ramon) and both he and Daffy eventually give up.
It's a sad state of affairs, when a mouse can make a machine turn a duck into a chicken on account of a rat.