Cleaning underneath the feeder??

Hi!

We recently invested in a bird feeding station and the birds seem to really like it so that is so encouraging! However, I've realised that there is a lot of wastage in the form of seeds and bird droppings accumulating underneath the feeder. I have read online about the need to rake and remove this so the birds remain healthy as well as a rotation of the feeding station. However, what's the best way to clean underneath the feeder to ensure hygiene? Do I rake the seeds and then remove droppings by hosing the concrete area where it has landed? Is soap and hot water needed? And where do I dispose of the waste? The grey bin? Also, how often should I do this need? I need advise, I don't want the birds to get sick or the garden to be in a miserable state as my dogs spend time there as well.

Thank you!