I'vs been cleaning film using filmguard and cut up segments of white all cotton t shirts. The results have been good using minimal filmguard sprayed on the fabric and held between the fingers through the reminder. However, I have run out of t shirts! Is there a cheaper alternative to buying more white cotton t shirts or can I use say cotton bedsheets cut up. I do wash the fabric but my wife is not that keen on the filmguard rags going in the washing machine. Can anyone recommend an alternative?