Laundry additive and drum treatment

1. A liquid laundry additive comprising:

a. zinc ricinoleate;

b. carboxyalkyl cellulose; and

c. at least one surfactant;

wherein the zinc ricinoleate is present, on a wet basis, in an amount of about 10% or less, the ratio of total surfactant to zinc ricinoleate, on a dry basis, is less than about 1.4:1, and the additive is pourable.

2. The liquid laundry additive of claim 1 , wherein the surfactant comprises an amphoteric surfactant, an anionic surfactant, and, optionally, a nonionic surfactant.

3. The liquid laundry additive of claim 1 , further comprising a biocide.

4. The liquid laundry additive of claim 1 , wherein the carboxyalkyl cellulose comprises carboxymethyl cellulose.

5. The liquid laundry additive of claim 1 , wherein the additive has a pH greater than 7.

6. The liquid laundry additive of claim 5 , wherein the additive has a pH of at least about 8.5.

7. The liquid laundry additive of claim 1 , which is essentially free of enzyme bleach, organic solvent, siloxane, solids, citrate, polysaccharide, and isoprenoid.

8. The liquid laundry additive of claim 1 , which is essentially free of silicone and cyclodextrin.

9. The liquid laundry additive of claim 1 , wherein, the zinc ricinoleate is present, on a wet basis, in an amount of about 7% or less.

10. A method for treating laundry in a washing machine comprising adding to the washing machine in combination:

a. laundry to be treated;

b. detergent; and

c. liquid laundry additive comprising:

i. zinc ricinoleate;

ii. carboxyalkyl cellulose; and

iii. at least one surfactant;

wherein the amount of zinc ricinoleate, on a wet basis, is about 10% or less of the liquid laundry additive, the ratio of total surfactant to zinc ricinoleate, on a dry basis, is less than about 1.4:1, and the additive is pourable.

11. The method of claim 10 , wherein b. and c. are added separately.

12. The method of claim 10 , wherein b. and c. are mixed before adding to the laundry.

13. The method of claim 10 , wherein the amount of zinc ricinoleate, on a wet basis, is about 7% or less of the liquid laundry additive.

14. A method for treating laundry washing machine drum odor, comprising:

a. adding to the washing machine a liquid laundry additive comprising:

i. zinc ricinoleate;

ii. carboxyalkyl cellulose; and

iii. at least one surfactant;

wherein the zinc ricinoleate, on a wet basis, is 10% or less of the liquid laundry additive, the ratio of total surfactant to zinc ricinoleate is less than about 1.4:1 on a dry basis, and the additive is pourable.

15. The method of claim 14 , wherein the additive further comprises a biocide.

16. A method according to claim 14 , wherein laundry detergent is also added.

17. A method according to claim 14 , wherein the washing machine contains laundry to be washed.

18. A liquid laundry additive comprising:

a. zinc ricinoleate;

b. carboxyalkyl cellulose;

c. amphoteric surfactant;

d. anionic surfactant;

e. biocide;

f. fragrance; and

g. colorant;

wherein the zinc ricinoleate is present, on a wet basis, in an amount about 10% or less, the ratio of total surfactant to zinc ricinoleate is less than about 1.4:1 on a dry basis, and the additive is pourable and essentially free of enzyme.

19. The liquid laundry additive of claim 1 , comprising an aqueous solvent.

20. The method of claim 10 , wherein the additive is essentially free of enzyme and comprises an aqueous solvent.

21. The method of claim 14 , wherein the additive comprises an aqueous solvent.

22. A laundry care article comprising a pour bottle containing the liquid laundry additive of claim 1 .

23. The laundry care article of claim 22 , wherein the pour bottle is a plastic squeeze bottle.