Arm & Hammer Laundry Detergent only $1.99 at Walgreen Week of 10/20

This week Walgreen's has 50 oz bottles of Arm & Hammer detergent on sale for $4.99 B1G1 FREE! Use the scenario below for a fantabuLESS deal. 

2 Arm & Hammer Detergents B1G1 Free- $4.99
Use - $1/2 MQ from 10/6SS
Pay- $3.99 for 2
Final- $1.99 each