It was six minutes into the second half before Bath even registered a point, and by then they were 23-0 down.
That was courtesy of tries from England back rower Joe Worsley and South African centre Stuart Abbott, with the boot of fly-half Alex King adding two conversions, a penalty and a drop-goal.
Bath finally sprang into life with a try from Scotland wing Simon Danielli – Olly Barkley converting, before adding a penalty.
But Wasps did not take their foot off the gas, and two further penalties from King kept the scoreboard ticking over, before a try from wing John Rudd sealed the visitors' fate, Mark van Gisbergen converting after King had added a second drop-goal.
Bath did manage a try through Welsh scrum-half Gareth Cooper in the dying minutes, but by then the game was well beyond coach Michael Foley's side, who now find themselves deep in the relegation struggle.
For London Wasps:Tries: Worsley, Abbott, RuddCons: King 2, Van GisbergenPens: King 3DGs: King 2
For Bath:Tries: Danielli, CooperCons: Barkley 2Pen: Barkley