Thumb Score: +18 Walmart has 2-Countt Air Wick Plug in Scented Oil Warmer + $4 Walmart Cash on sale for ~$3.79 when you clip the $4 Walmart Cash offer on the page. Select free store pick up where available.[LIST][*]Note: Free store pickup is valid at select stores only, if you are asked to select a time slot for pickup then your store may not offer free pickup.