Thanks to Tamara at Can-U-Dig-It for the tip.
The EPA has pulled a couple Scotts products off the shelf ("Garden Weed Preventer + Plant Food" and "SLS Fertilizer With .28 Halts") because, according to the EPA,the products have not been registered with the EPA and have invalid registration numbers.
EPA has urged Scotts to voluntarily recall the product, and they’ve posted information about how to find out if you have one of these products on your shelf.
More later. Stay tuned.