Because dog tags are made of metal, they cannot be destroyed in most paper shredders (and NEVER in high security/NSA listed paper shredders!). To destroy metal tags, a special, more durable cutting head is required to both shred the tags thoroughly and protect the machine from damage. SEM has a product called the IDShred65 that is perfect for shredding all different kinds of identification, including dog tags and metal credit cards. 

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