This link goes to the manufacturer’s website, where you can print out a $1 coupon good on any Cepacol product (excluding 4 ct packs).  These have recently been on sale for .99 at Rite Aid and also been spotted at some Dollar Trees, so free at both places.  Not all Dollar Trees carry the same merchandise.  I spotted these for $1.14 on clearance at a couple of Walgreens stores, not free, but if your DT store doesn’t have any and you’re not near a Rite Aid…

And if you’d like a sample, choose from one of three new varieties.