Sure if they are in the temp files anything there can be deleted...if it will go. Sometimes they are locked. If that happens try turning off Access Protection temporarily.
Click General Settings and Alerts
Click Access Protection and uncheck it & click Apply
Keep it on your screen while you proceed deleting the temps then re-enable it.
Thanks very much Peter - they've all gone!
You're welcome. Your question prompted me to look for the same on my machine and I didn't find any...I guess because it's rarely that I run a scan.