If you typically start your day with a bowl of cereal, beware! While you might find a special surprise in your box, it’s no toy or sticker pack.

Kellogg’s is recalling millions of boxes of Mini-Wheats cereal that may be contaminated with pieces of metal mesh. No injuries have yet been reported, and the company is working with retailers to remove the boxes from shelves.

According to the Food and Drug Adminstration, the recall affects Frosted Mini-Wheats Bite-Size Original and Mini-Wheats Unfrosted Bite Size. Check your boxes for the following UPC codes and dates:

UPC 3800031829 – 18-ounce carton with Better if Used Before Dates between APR 01 2013 KB – SEP 21 2013 KB

UPC 3800073444 – 18-ounce carton with Better if Used Before Dates between APR 01 2013 KB – SEP 21 2013 KB

UPC 3800031834 – 24-ounce carton with Better if Used Before Dates between APR 01 2013 KB – SEP 21 2013 KB

UPC 3800046954 – 30-ounce carton with Better if Used Before Dates between APR 01 2013 KB – SEP 21 2013 KB

UPC 3800031921 – 70-ounce club store carton with Better if Used Before Dates APR 01 2013 KB – JUL 29 2013 KB

UPC 3800004961 – single-serve bowl with Better if Used Before Dates between 04013 KB – 09213 KB

UPC 3800021993 – single-serve carton with Better if Used Before Dates between AP 04013 – AP 09213 or FK 04013 – FK 09213 Kellogg’s Mini-Wheats Unfrosted Bite Size cereal

UPC 3800021983 – single serve carton with Better if Used Before Dates between FK 04013 – FK 09213

UPC 3800035982 -18-ounce carton with Better if Used Before Dates between APR 01 2013 KB – SEP 21 2013 KB

(Yikes! Watch out for bits of metal in your Mini-Wheats!)

So what should you do if your box is on the black list? Call Kellogg’s at 800-962-1413 from 8:00 a.m. to 6:00 p.m. E.T. Monday through Friday to arrange for a replacement of your purchase. You can also email Kellogg’s through their website, although the recall information page is filled with comments from frustrated and confused consumers. 

One commenter wrote, “So what am I supposed to do with the three boxes of recalled cereal that I have? Your customer service is pretty poor and I can not get in contact with a representative. No one answers your 1-800 line.”

This isn’t the first cereal issue the company has had in recent years. In 2010, Kelloggs pulled ceral that had been improperly packaged, causing odd colors and odors.