How do I know this coupon works?

So this is something I probably should have covered a while ago, so sorry! Some of you may read some of my posts and wonder how I used a coupon on a product that was not pictured on the coupons. Well here is a great (and little known ) trick. Most companies will put out a coupon with a more expensive product pictured even though the coupon will work for less expensive ones! (great marketing tool )

The trick is that you can use that coupon for many other items or even on travel sizes (when not specificly stated). Here is how to know if you can use it! Look at the first set of 5 numbers (the Manufacture ID) if they match the first set of 5 numbers of the barcode on the product they will usually work! So go on and find some amazing deals.