Litter compositions
Provided herein are compositions and methods comprising a fragrance and from about 0.5 weight % to about 5.0 weight % of a granular malodor adsorbent which can be used to eliminate malodor in animal waste. The granular malodor absorbent can be granular molecular sieves or granulated activated carbon and has a pore size from about 0.4 nm to about 2.0 nm and a total surface area from about 100 m 2 /g to about 1500 m 2 /g.
1. An animal litter composition for control of malodor from pet urine and feces, the animal litter composition comprising a fragrance and a granular malodor adsorbent,
wherein the granular malodor adsorbent is present in an amount from about 0.05 weight % to about 4.0 weight %, has a pore size from 0.4 nm to 0.8 nm and a total surface area from about 100 m 2 /g to about 1500 m 2 /g,
wherein the granular malodor adsorbent adsorbs about 25% to about 60% of the malodor from pet urine and feces and excludes at least 40% of the fragrance, and
wherein the granular malodor adsorbent comprises molecular sieve granules.
2. The composition of claim 1 , wherein the molecular sieve granules have a surface area from about 200 m 2 /g to about 800 m 2 /g and a pore size from about 0.4 nm to about 0.6 nm.
3. The composition of claim 1 , wherein the molecular sieve granules have a mesh size from about −8 to about 60.
4. The composition of claim 1 , wherein the fragrance is present in an amount from about 0.05 weight % to about 0.4 weight %.
5. The composition of claim 1 , wherein the fragrance is unencapsulated.
6. The composition of claim 1 , further comprising an absorbent substrate.
7. The composition of claim 6 , wherein the absorbent substrate comprises an absorbent granule comprising an absorbent core and a distinct layer surrounding the absorbent core.
8. The composition of claim 6 , wherein the absorbent substrate comprises clay.
9. The composition of claim 6 , wherein the absorbent substrate comprises a non-swelling clay core coated with a swelling clay.
10. The composition of claim 6 , wherein the absorbent substrate comprises an expanded perlite core coated with a swelling clay.
11. The composition of claim 9 or claim 10 , wherein the swelling clay is sodium bentonite.
12. The composition of claim 1 , wherein the granular malodor adsorbent adsorbs about 30% to about 40% of the malodor.
13. The composition of claim 1 , wherein the granular malodor adsorbent excludes at least 75% of the fragrance.
14. A method for reducing or eliminating malodor from pet urine and feces while providing a fragrant aroma to the surrounding environment, the method comprising:
contacting the malodor from pet urine and feces with a composition comprising a fragrance and a granular malodor adsorbent,
wherein the granular malodor adsorbent is present in an amount from about 0.05 weight % to about 4.0 weight %, has a pore size from 0.4 nm to 0.8 nm and a total surface area from about 100 m 2 /g to about 1500 m 2 /g, and
wherein the granular malodor absorbent absorbs about 25% to about 60% of the malodor from pet urine and feces,
wherein the granular malodor adsorbent comprises molecular sieve granules.
15. The method of claim 14 , wherein the composition has an equivalent fragrance perception, an increased fragrance perception, or a fragrance perception that is less than about 60% reduced, relative to a control composition with no granular malodor adsorbent.
16. The composition of claim 2 , wherein the surface area of the granular malodor adsorbent is about 300 m 2 /g to about 600 m 2 /g, and the pore size is about 0.6 nm.
17. The composition of claim 2 , wherein the surface area of the granular malodor adsorbent is about 300 m 2 /g to about 600 m 2 /g, and the pore size is about 0.8 nm.
18. The composition of claim 1 , wherein the granular malodor adsorbent further comprises activated carbon granules having a surface area from about 100 m 2 /g to about 600 m 2 /g.
19. The composition of claim 18 , wherein the activated carbon granules have a size from about −12 mesh to about 40 mesh.