FREE Sample of U by KotexApril 2, 2010 by Mitchell Wischmann This post may contain a link to an affiliate. See my disclosure policy for more information. Walmart is offering a FREE sample of U by Kotex products. You may also want print this coupon for $1/1 U by Kotex products. This coupon and a Register Reward offer at Walgreens starting on 4/4 will make these products FREE!