Green’s Dictionary of Slang

flea and louse n.

[rhy. sl.]

a house, esp. a house with a bad reputation.

[UK]Hotten Dict. of Modern Sl. etc.
[UK]Sl. Dict.
[US]A.J. Pollock Und. Speaks 40/2: Flea and louse, a bawdy house.
[US]Maurer & Baker ‘“Aus.” Rhyming Argot’ in AS XIX:3.
[UK]B. Dark Dirty Cockney Rhy. Sl. 54: When I was a lad I use to go to the flea and louse every weekend. In the end I got Pat and Mick and my Boris Becker almost dropped off.