Amazon has Dr Elsey’s Cat Litter (various styles) with 25% off coupon for Subscribe & Save (applies only to one bag).
YMMV (May be targeted or for Prime only)
https://smile.amazon.co
Also, you get additional 5% off with 5+ S&S items.
Final price with both discounts for 40lb bag unscented comes to $14 before tax.
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