If you're a petperks member you can log into your account and print out 2 $5 off any Authority food purchase coupons..and a 15% off coupon as well.  If you're not a member, go to petsmart.com to sign up now, its free and they'll give you a temporary card to print out and use.  Ok so the bags are normally $7.99 and on sale for $5.99.  Coupon makes them $0.99.  At our Petsmart there were also coupons on the shelf, 2 free cans of Authority Wet Food w. Any Authority purchase!!  3 items for $0.99 or less if you use the 15% off coupon.  I did find one bag of kitten food that was clearanced to $3.99 so I made $1 on that purchase.  Also the register takes the full $1.58 off for the wet food even though they're on sale for $0.70 each :)
I hit the kiosk at CVS this morning....and both my fiance and I got a coupon for $3 off any 2 Wet & Wild Items!  They have 99cent items!!  So you can get 3 99cent bottles of nail polish and it will take the $3 off or get 2 99cent items and get an additional $1 off the rest of your bill!  Remember you can scan your card 2 times a day!
Ok the deal is buy $20 worth of a certain product, get $10 EB.  The AirWick iMotions are on sale for $4.99.  Buy 4, use 4 $4 off coupons...and one $4 off $20 if you have it....and you pay nothing!  This should trigger the $10 EB w/o a problem.  I did it this morning!