Limited time deal. Amazon with GORILLA COMMERCE has the GORILLA GRIP 24" x 17" Cat Litter Trapping Box Mat (Gray) for $9.89 with free shipping on $35+ or with Prime.

The 2-Pack 24" x 17" is also on sale for $20, while the 35" x 23" (Beige) and 30" x 20" Half Circle (Grey or Beige) goes for $16 and $15, respectively.