Visit website. I stash them in a box and donate them to a food bank every time the box gets full. Some merchants may not be forthcoming with untracked cashback. Similar to Shopmium, they cashback freebies a filtering option, so you can see all the offers available cashback freebies ASDA for example.
With Checkout Smart you can not only get cashback on your groceries but you can also pick up lots of FREE items — there is usually something new on offer every week. Basically, you must purchase an item through the TopCashback network, and then TopCashback will reimburse you via cash back earnings that equal or exceed the cost of your purchase.
TopCashback runs freebie promotions on a regular basis that provide you with a free item at a participating merchant after you purchase the item and receive the equivalent amount of cash back earnings from TopCashback.