DONT FORGET!!!! Wal Mart will double up to 99c coupons.
Weigh your options carefully though. The registers are not set up for doubles yet, which means that your check out is much slower than if you could go to a store that doubles daily like Foodland or Kroger. Sometimes, it is much simpler just to go to those stores to get your doubles. You save time, both at the check out and, let's face it, you get in and do your business without being distracted. Keep these in mind when planning your method of attack... (lol).
That much being said, please do not forget to use your coupon etiquette when shopping. If you are doubling, make a note of the price. It helps to have the numbers all figured out and ready when you go to the register. The cashiers appreciate your few minutes of preparation. It makes the transaction much smoother for them and you. If the item is 1.64 (Scotchbrite wipes) then you could make a chart resembling this: