Storage Running out on Web Server


My web server on the D drive is running out of space, not sure what is taking it up but had a quick look in D:\eB_Logs\W3SVC1 and there are approx 4GB worth in there.

If i delete these what will i loose and will it affect eB in anyway??

Prob not because they are log files but want to make 100% sure i hate deleting stuff!