Unity documents taking up computer space

Hello everyone,

My computer disc space is almost running out. When I went searching for what was taking up so much space under 'Other', I found I had a ton of Unity project documents like the ones pictured below.



Does this happen with everyone using Unity? Is there a solution to this problem? I have 90.0GBs in 'Other' and I believe a large chunk is things like this. Thanks very much