Amazon has 4-Count Clorox Laundry Pens (2x Bleach & 2x Stain Fighter for Colors) for $8.58 when you 'clip' 20% off coupon and checkout via Subscribe & Save. Shipping is free. Thanks TattyBear
Note, must be logged into your account. Coupons are typically one use per account. You may cancel your Subscribe & Save subscription any time after your order ships. Select the later date from the "First Delivery On" menu to get regular S&S checkout instead of adding to your cart.
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Amazon also has 4-Count Clorox Zero Splash Bleach Pen for $8.22 when you 'clip' the 20% coupon and checkout via Subscribe & Save. Shipping is free.