Just got an email from Detol with form to fill out for a coupon for Finish dishwashing products.
50% off Finish Shine & Dry Rinse Aid 500ml
20% off Finish Protector
50% off Quantum 10-pack
Looks like generic coupons to print as many times as you need.
Coupons valid till 31/12/2013
just tried. After i put in my details it says coupon has already been used