it works by having the bucket tied to the rope on a pulley system that you lower done into the well and then the bucket fills up and after this you pull the rope and the bucket of water will come up full
Typically one use cameras do not offer the photo quality that a compact, high-quality camera would offer. However, the value of the one use camera is still a good deal as you don't have the worry of...
If you mean ladybirds, the red beetle with the black spots, they will be killed by insecticides. They however eat aphids so are beneficial and remove the need for spraying for greenfly.