Here's the scoop: Betty can't sleep because the construction crew outside her apartment is making too much noise. She resolves to leave the city and go to a house in a more natural setting. Once she gets there, she plops down in a hammock, but soon finds herself the subject of abuse my a wide array of noisy, violent, vengeful (for no apparent reason), even possibly-dangerous insects.
I saw this short several months ago, on an obviously colorized version (which irritated me a lot). There was very good animation, though I can;t remember any specific gags. I think there was something to do with her driving her car up onto the porch of the country house once she gets her, but I'm not sure. I know I liked it, and I'd enjoy seeing it again, only in it's original black and white.