Self watering compost bins

   I had a revelation today whilst digging. I was thinking about putting the weeds into the black plastic compost bins and was pondering the information a chap gave us at a talk on composting at the Allotment Society. I usually have Ants living in the compost bins. That is a sign the bins are way to dry. The contents of the bin seem to breakdown well enough but could it work better? The chap said the contents of the bins had the moist for the worms to do there thing. History shows me that I just don't water my compost bins. So the question was how to water the inside of the compost bins without

1. Doing it myself
2. Keeping it dark inside the bin

   It occurred to me that if I were to turn the compost bin lid upside down it would act as a rain catcher, it being saucer shaped. It would be a good fit on the top of the bin, after all the lid was just upside down. I drilled a hole in the centre of the lid, placed the lid on the bin and put a brick in the lid to stop it blowing away. It works a treat. The sauce shape catches the rain and funnels it to the hole where it drop the water into the bin.