Delete Junk Files

Hello,
While running "Revo Uninstaller", in 'Tools' found 'Junk files cleaner', ran it and found so many (1.5 GB), some of them are more then a year old, all of them are "*.tmp" files.
Location of these files is :"C:\Users\admin\AppData\Local\Temp\*.tmp"
Note: "CCleaner" found the same.
Is it safe to "clean" them ?, lot of space will be saved.
Answers will be appreciated.
Thanks
Motim

I always delete the *.tmp files, usually by holding down the Windows key while pressing R then typing %temp% in the dialog box then I Select all the files and Delete. A few won't delete as they are in use. Then after the next restart/reboot/startup I empty the Recycle Bin.

OldMike65 said:

I clean them out all the time, mainly using CCleaner. You should also make image backups when your Windows is running good. Just for insurance. :) Macrium Reflect is the Best Free backup app around too. Revo is also Very good. You should be just fine.

Hello and Thanks,
Make the image backup after the cleaning ?
If I make the backup before, then if I use it, all the 'junk' will be back.
Thanks
Motim