Chewy is offering a $50 Litter-Robot Discount (via way of a gift card) on their Whisker Litter-Robot 3 & Core Accessories Kit at checkout, plus you get their 365-day return policy.
Please be aware that this post was initially created for a sale that Litter Robot had many years ago. But it has morphed into a post about how to get a discount or find the product for less.
Please remember that the best Litter Robot discount might only be $25 with an affiliate link or referral link. However, where you buy it from might matter if you're concerned about your cat using the product.
In general, Litter-Robot does not explicitly offer discounts, coupons, promo codes, or sales. They do tend to offer deals on their bundles around major holidays.
Litter Robot is pretty strict about offering discounts. Therefore, you're unlikely to find a Litter Robot discount at most times of the year, and if you are, it will be more likely to be a bundle.