I pour the hottest water I can make or get from the faucett down the sides and on the basket. Then with a hot cloth I just wipe down what i can. I dont get it all by any means but I think i do a pretty good job at straining to not worry about what i leave behind.
Usually this is pretty easy because its only wax by the time my bees are done cleaning out the sticky stuff. Sometimes you get most of the wax out pretty easy with a hose as the bees leave a flaky, white wax thats mostly just laying in the bottom of the extractor. I think cool weather extractor cleaning is easier than hot weather(100 degrees or hotter) cleaning,
I think a little wax in your honey is good...It makes your teeth shine, just as if you waxed your car