Starting 10-12, Walgreens will have Oral-B Cross Action toothbrushes, Crest Pro Health Tootpaste 6oz and Mouth wash 16.9oz on sale three for $9. You will receive $3 in Register Rewards when you buy three. Deal Idea: Buy Three Crest Pro Health 16.9 oz Mouthwash for $9 and use one the $2 off two coupons and one of the $1 off one coupons. Pay $6 and get back $3 in Register Rewards. Final price $3 for three or $1 each.