Big Folder Size

Big Folder Size

Hi everybody,
 
We are using Netflow Analyzer 7 Pro. I have a problem with big size of files in "AdventNet\ME\NetFlow\mysql\data\netflow\" folder. There are .myd .myi .frm files for every day in the period of 2 months. This folder size is aproximately 50 GB.
 
I think these files are log files. I dont need logs which are older than 2 or 3 weeks ago. Can i delete this files with just Delete or i must delete those with tool or any command.
Thanks.

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