This post refers specifically to downpipes with a square cross section. It shows how to modify a rainwater downpipe spout (shoe) to stop a dripping noise when the drip starts within the outlet shoe. For drips that drop off the guttering outlet and fall all the way down to the bottom of a straight downpipe and hit the shoe you may get immediate relief from the noise by removing the shoe and letting the drip fall on the ground, roof or whatever is below the downpipe. In the long term this may cause excessive splashing under heavy rain which could cause damage to foundations or brickwork mortar, because the water is not directed away from the building. The drip needs to be guided to the side of the downpipe so it will run down the pipe and only tend to drip at the bottom where it can be dealt with by the method described here. Any method devised must not prevent leaves and dirt from being washed all the way down the pipe or a blockage will ensue.