At first I was going to comment "I like how instead of squashing the ghosts like bugs we're gently carrying them out of our home" but then I realized that the 'Flush' of the title was literal. Oh noooo! I hope ghosts don't mind a trip through the sewers!
The art is very cute, I like how each ghost has its own appearance and animations, that's an excellent attention to detail. :) Being able to toggle the glasses vision on and off is also nice, but I don't think there's any gameplay benefit to switching it off.
It was a little difficult at times to grab a ghost (and pick up the glasses at the start), it wasn't always clear how to properly line things up.
The irony of messing up your freshly tidied home when clearing it of ghosts was a lovely twist. :D