There is a promotion on select cleaning products at Target: buy four and receive a $5.00 Target gift card. There is also a Catalina promotion on Windex through 7/10. A Catalina is a long, receipt-like coupon that prints when a qualifying purchase is made. Use the coupon to save on almost anything in the store on a future purchase. Here's how to qualify:

Buy Windex Products between 6/13-7/10:
Buy 1, Receive $0.50 Catalina
Buy 2 or more, Receive $1.50 Catalina

Buy four bottles, use two coupons, and pay $8.36 out of pocket. At checkout, receive a $5.00 gift card and a $1.50 Catalina. Pay $0.47 per bottle!

Buy 4, Receive $5.00 Target Gift Card through 7/30
Buy 2 or more, Receive $1.50 Catalina through 7/10

Use two $1.50/2Windex products (coupons.com)

Pay $8.36, Receive $5.00 Target Gift Card and $1.50 Catalina

Final Price: $0.47 each, when you buy 4

Buy 4, Receive $5.00 Target Gift Card through 7/30

Use four $0.50/1Scrubbing Bubbles All Purpose Cleaner with Fantastik (coupons.com)

Pay $8.36, Receive $5.00 Target Gift Card

Final Price: $0.84 each, when you buy 4

Buy 4, Receive $5.00 Target Gift Card through 7/30

Use four $0.50/1Scrubbing Bubbles Bathroom Cleaner product (coupons.com)

Pay $9.88, Receive $5.00 Target Gift Card

Final Price: $1.22 each, when you buy 4

Buy 4, Receive $5.00 Target Gift Card through 7/30

Use four $0.50/1Shout product (coupons.com)

And submit $0.50/1Shout Wipe & Go, 12 ct, via rebate app (ibotta.com)

Pay $10.48, Receive $5.00 Target Gift Card and Submit for $0.50 ibotta Credit

Final Price: $1.25 each, when you buy 4

Mix and match:

Buy 4, Receive $5.00 Target Gift Card through 7/30
Buy 2 Windex, Receive $1.50 Catalina through 7/10

Use one $1.50/2Windex products (coupons.com)

And use one $0.50/1Scrubbing Bubbles All Purpose Cleaner with Fantastik (coupons.com)

And use one $0.50/1Shout product (coupons.com)

And submit $0.50/1Shout Wipe & Go, 12 ct, via rebate app (ibotta.com)

Pay $8.89, Receive $5.00 Target Gift Card and $1.50 Catalina and Submit for $0.50 Ibotta Credit

Final Price: $0.47 each, when you buy all 4