I love my cats. But not the little gifts that one of the cats occasionally coughs up.

So I was excited to see an offer on Petco’s Facebook page for a free 3.5-pound bag of Hill’s Science Diet Hairball Control formula.

I filled in my information and clicked “submit,” thinking I’d get a link to a coupon to print out and take to Petco to get a free bag of cat food or maybe a note telling me there would be a coupon in my e-mail. Instead, the message told me to “please allow two weeks for delivery of your trial bag.” So I’m hopeful that within two weeks we’ll have our free cat food.

To request a bag for your cat, go to www.facebook.com/petco and click on “take the 30-day challenge” or “hairball challenge.” The site doesn’t say how long this freebie will be available.