Mouse Wreckers is a 1949 Warner Bros. Looney Tunes short directed by Chuck Jones, written by Michael Maltese and starring Hubie and Bertie in their first pairing with the redesigned Claude Cat (an early, primordial version of the cat appeared in 1943's The Aristo-Cat). The cartoon was released on April 23, 1949.
The short centers around Hubie and Bertie's attempts to move into a new home by chasing Claude out of the house. Mel Blanc voices Bertie and an uncredited Stan Freberg voices Hubie.
— Wikipedia