Summary
The idea that citrus doesn’t compost well is a myth. The good stuff is largely in the fruit, which will be gone by the time you compost. The seeds will ferment and sprout, and the peels deter your composting worms. I've also seen citrus mentioned as a slug deterrent, but this is also largely a myth. Slugs are attracted to citrus, so you can use it as a makeshift trap. If trapping is the goal, though, beer traps work more effectively.
