No they are not, they would rinse the charcoal out. Thats what stops the smell in the first place. they last a long time and when you start to smell the litter, It’s time to change it.

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FRESH HEADQUARTERS 6 Pack Replacement Filters Compatible with Litter-Robot 4 – Natural Absorbent Activated Charcoal Cat Litter Box Filters Eliminate Odors with Easy Installation

4.7/5

Product ID: 481636959

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FRESH HEADQUARTERS 6 Pack Replacement Filters Compatible with Litter-Robot 4 – Natural Absorbent Activated Charcoal Cat Litter Box Filters Eliminate Odors with Easy Installation

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TrustScore 4.5 | 7,300+ reviews

Meera L.

Smooth transaction and product arrived in perfect condition.

3 weeks ago

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Fantastic and great service. Shipping was faster than expected.

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S$115

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TrustScore 4.5 | 7,300+ reviews

Anita G.

Good experience, but the tracking updates could be better.

2 months ago

Ali H.

Fast shipping and excellent packaging. The Leatherman tool feels very premium and sturdy.

1 day ago

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