# US 5,707,658 A · Method for treating horse manure with dry acid

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- Number: US 5,707,658 A
- Document ID: US5707658A
- Status: Granted
- Kind: A
- Application number: 08/757,748
- Filed: 1996-11-26
- Granted: 1998-01-13
- Earliest claimed: 1996-11-26
- Assignees: Jones-Hamilton Co.
- Inventors: David R. Morgan; Suad A. Terzich
- Web page: https://patentgrep.com/patent/US5707658A

## CPC

- A01K 1/0152: {Litter}
- A01K 1/01: Removal of dung or urine {; Removal of manure from stables}(A01K1/015 takes precedence)
- A01N 59/02: Sulfur; Selenium; Tellurium; Compounds thereof
- A01K: ANIMAL HUSBANDRY; AVICULTURE; APICULTURE; PISCICULTURE; FISHING; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; NEW BREEDS OF ANIMALS
- A01N: PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF (preservation of food or foodstuff A23); BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES (preparations for medical, dental or toiletry purposes which kill or prevent the growth or proliferation of unwanted organisms A61K); PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS

## Abstract

A method for treating equine manure involves contacting the manure with sodium bisulfate, preferably at a level of at least 50 grams per square meter of surface. The sodium bisulfate is preferably applied at least once per week. Another embodiment is a method for treating the manure with a material to reduce the pH of the manure, preferably to a pH less than 5. A related embodiment is a method for treating the manure with an acid to reduce the number of flies in the area around the manure, preferably to less than 25% of the number of flies in the same area without the treatment. Another embodiment is a method for treating the manure with a material to reduce the ammonia level in the air above the manure to less than about 2 parts per million.

## Claims

### Claim 1

A method for reducing the number of flies in an area containing equine manure comprising contacting the manure with a dry acid to reduce the pH of the manure at least about 3 pH units to a pH less than about 5.

### Claim 2 (depends on 1)

The method defined in claim 1 wherein the pH of the manure is reduced to less than about 4.

### Claim 3 (depends on 2)

The method defined in claim 2 wherein the pH of the manure is reduced to less than about 3.

### Claim 4 (depends on 1)

The method defined in claim 1 wherein the dry acid is selected from the group consisting of sodium bisulfate, sulfamic acid, and mixtures thereof.

### Claim 5 (depends on 4)

The method defined in claim 4 wherein the dry acid is sodium bisulfate.

### Claim 6 (depends on 1)

The method defined in claim 1 wherein the dry acid has a Primary Irritation Index of less than about 2.

### Claim 7 (depends on 1)

The method defined in claim 1 wherein the number of flies in the area is reduced to less than about 25% of the number of flies in the same area without application of the dry acid.

### Claim 8

A method for reducing the number of flies in an area containing equine manure on a surface, comprising applying a dry acid on the surface at least about once per week, to reduce the number of flies in the area to less than about 25% of the number of flies in the same area without application of the dry acid.

### Claim 9 (depends on 8)

The method defined in claim 8 wherein the dry acid is applied on the surface at least about once per every three days.

### Claim 10 (depends on 9)

The method defined in claim 9 wherein the dry acid is applied on the surface at least about once per every two days.

### Claim 11 (depends on 8)

The method defined in claim 8 wherein the dry acid is applied on the floor of a horse stall, and wherein the horse exhibits not more than about 15 total fly evasive behaviors per 9 hours in the stall.

### Claim 12 (depends on 8)

The method defined in claim 8 wherein the dry acid is selected from the group consisting of sodium bisulfate, sulfamic acid, and mixtures thereof.

### Claim 13 (depends on 12)

The method defined in claim 12 wherein the dry acid is sodium bisulfate.

### Claim 14 (depends on 8)

The method defined in claim 8 wherein the Primary Irritation Index of the dry acid is less than about 2.

### Claim 15

A method for reducing the number of flies in an area containing equine manure on a surface, comprising applying sodium bisulfate on the surface at least about once per week to reduce the pH of the manure by at least about 3 pH units to a pH less than about 5.

### Claim 16 (depends on 15)

The method defined in claim 15 wherein the pH of the manure is reduced to less than about 4.

### Claim 17 (depends on 16)

The method defined in claim 16 wherein the pH of the manure is reduced to less than about 3.

### Claim 18 (depends on 15)

The method defined in claim 15 wherein the dry acid is applied on the surface at least about once per every three days.

### Claim 19 (depends on 18)

The method defined in claim 18 wherein the dry acid is applied on the surface at least about once per every two days.

### Claim 20 (depends on 15)

The method defined in claim 15 wherein the number of flies in the area is reduced to less than about 25% of the number of flies in the same area without application of the dry acid.