There's a mail-in rebate offer from Swiffer. Apologies because I just saw it and the purchase period ends today. However, the start of the purchase period was April 1, so it's possible you may have receipts that already qualify for the rebate.
If you've purchased $10 in Swiffer Refills, you can get a $5 preloaded debit card back buy mail. Or, if you've purchased $20 worth, you can get a $10 card back. You can find the forms for both offers here.
And, if you really wanted to, you could go make the qualifying purchase today and mail in the rebate.
