Huge number of AppData files causing slow scanning

I run Windows 7 , using Google and occasional Firefox but not IE . In XP I could instruct the system to delete Temp Int files but there is no such facility in Windows 7 and I am assuming that somehow these don't get deleted automatically as I was lead to believe but remain in the AppData folder . There I find that AppData/Local/Temp has 93,550 files in 1992 folders using 9GB of space . In view of previous comments about the inadvisability of simply deleting anything in the AddData folder I am wary of doing so but can't believe that this number of files serves any useful purpose . Does anyone have any thoughts ?? These files really clog up the regular scanning that I do .

Tech Support Guy System Info Utility version 1.0.0.2
OS Version: Microsoft Windows 7 Home Premium, Service Pack 1, 64 bit
Processor: Intel(R) Pentium(R) D CPU 3.40GHz, Intel64 Family 15 Model 6 Stepping 4
Processor Count: 2
RAM: 3070 Mb
Graphics Card: RADEON X600 Series Secondary (Microsoft Corporation - WDDM), 6 Mb
Hard Drives: C: Total - 953766 MB, Free - 842565 MB; F: Total - 2861578 MB, Free - 2503791 MB;
Motherboard: Dell Inc., 0HJ054
Antivirus: AVG AntiVirus Free Edition 2014, Updated and Enabled