Thank you!
One last thing and I promise I will stop bothering you today!
I included the coding Dave provided above with my field names:
$days_TSV = "\t" . implode("\t", $_REQUEST['days'] ) . "\t";
It all works great when I select the category that it associated with. However, when I choose another category that is not associated with that field (days), I get an error undefined index because that fields days is being hidden by my query.
Here is the error: Notice: Undefined index: days in C:\inetpub\charlotteparent\directory\freeform1.php on line 86 Warning: implode(): Invalid arguments passed in C:\inetpub\charlotteparent\directory\freeform1.php on line 86
Is there any other way to fix that error when I am selecting other categories?