So, our new place has a sandpit ( a proper one with wooden sides) So I have a couple of questions.

1. How do I replace the sand that is there? Do you hire someone?
2. Where do you get sand for the pit from?
3. Is it expensive?
4. how often do you change it ?
5. how do you keep it clean/ cover it? if so what with?

LOl sorry, i know it feels like we're playing who wants to be a millionarre lol i just have no idea! thanks in advance