I got a coupon for 4$ off on sponge towels when you buy two SC Johnson products. Today I tried to use B1G1 free coupon I had for windex and and use the 4$ off on sponge towels. The cashier at walmart said no because she said on the coupon it says not valid in conjonction with other offers,promotion or discounts. I figured I could since I am using one coupon for the windex and the other coupon for the sponge towels. Am I wrong? What if I had bought 4 windex plus 2 coupons B1G1 free+ 4$ off, I am technically buying 2. I have noticed almost all coupons says not valid in conjonction with other offers,promotions and discounts.