On the outset it needs to be noted that a paper shredder is perhaps one of the least sophisticated of office equipment in vogue when it comes to use. However, this is possible only if the equipment selected is appropriate to one’s application and hence any deviation of this deems it a difficult selection process essentially attributable to the hesitation among most users to co-relate application to the financial implications involved.
Privacy experts often recommend that individuals shred bills, tax documents, credit card and bank account statements, and other items which could be used by thieves to commit fraud or identity theft.

link: http://adityafrontline.com/products/office-automation/paper-shredders/abc-shredders/