I found the following 2 options are available:
You can opt out of receiving pre-approved credit materials for five years or stop receiving them permanently by contacting the credit bureaus. Call toll-free 1-888-5-OPTOUT (1-888-567-8688) or visit OptOutPrescreen.com.
The phone number and website are operated by the major consumer reporting companies. You will be asked to provide specific personal information, including name, home telephone number, Social Security Number and birth date. The information will be kept confidential.
If you have a joint credit account, like a mortgage or car loan, your partner, spouse or co-signer will have to opt out also.
Requests to opt out are processed within five days, but it may take up to 60 days before you stop receiving pre-screened offers. If you change your mind and would like to receive pre-screened solicitations, you can use the same phone number or website to change your preferences
To stop direct mail from many national companies for five years is the Mail Preference Service maintained by The Direct Marketing Association (DMA). The DMA is a trade association for businesses in direct, database, and interactive global marketing.
After you register with this service, your name will be put on a “delete” file and made available to direct mail marketers. Additional information is available online at www.the-dma.org/consumers/offmailinglist.html.
I am definitely going to try it these options it can't hurt.