It's good to see a company step up to the plate and decide to make a pet treat recall on their own. Simply nourish has recently recalled their Simply Nourish Biscotti with Beef and Sweet Potatoes Dog Treats which are sold exclusively at PetSmart as reported by Philly.com where you can find more details of the recall and how to be reimbursed.
Because any type of food source can be susceptible to contamination, you should always monitor your pet's behavior. If you pet eats contaminated food, you will see a shift in behavior. Some of the symptoms to watch for are explained at Made in America Pet Supplies.
You may not see a major shift immediately, but the behavior shift may be gradual. If you notice physical or behavioral changes, you should consider getting new food or treats.