pkg clean question

[Zoran Kolic]

Amd64, 9.3. Updated few times, packages also. At first I
found on laptop that /var directory was at 102%. Using
"pkg clean" i removed about 400mb of cache packages from
/var/cache/pkg. Tried to clean desktop cache and the out-
put of the command was "nothing to do". I see about 400
mb of files in the cache directory. Is it safe to remove
them by the hand?
Best regards all

                          Zoran