Can I use discount codes when products are on sale, including the 'Welcome' discount? 26 April 2023 22:24 Updated Unfortunately no other discounts can be combined with a sales discount. Related articles I didn't receive my discount off my order. What can I do? If I purchase products during a sale, can I still ask for my order to be delivered at a future date? How does the Koala Refer a Friend Program work? Do all products come with the Koala warranty and consumer guarantees, even when purchased during a sale? How does the Koala 120-night trial return policy work?