Side note: these suckers are expensive! Only the Arm and Hammer in-wash scent booster cost under $8 when I bought it. Every other brand was over $10.

I used Arm & Hammer double duty for 6 years with no problems. I have 1 cat and scoop often, and change/scrub litter box frequently. Recently the litter has been smelly even after being cleaned.

The Arm and Hammer baking soda Fridge-N-Freezer odor absorber keeps smelly odors from stinking up your refrigerator. Shop a 12-pack at Amazon for just $1 apiece.

ARM & HAMMER™ Power Sheets Laundry Detergent features a concentrated formula designed to combat stubborn stains, odors, and dirt, providing a trusted clean without the need for heavy plastic ...

Arm and Hammer has many lines of litter for specific cat household needs. Some litter comes scented with Febreze and other pleasant smells to mask the odor from the cat box, or you can get unscented.