Composition and method for gathering earthworms
FIELD OF THE INVENTION 
     This invention relates generally to a composition and method for gathering worms. 
     BACKGROUND OF THE INVENTION 
     Worms, and particularly earthworms, are frequently used as bait for freshwater fishing. Earthworms are found in soil in many places, however, gathering the earthworms can be a difficult task. The earthworms sometimes must be gathered from below the surface of the soil, and in hot weather the earthworms are sometimes found in deeper levels of the soil. Digging for the earthworms is a tiring and time consuming task. It would be desirable to provide a composition and method for gathering earthworms which would not require tedious digging in the soil. 
     Earthworms come to the surface of the soil at night when it is cool. It is both difficult and inconvenient to gather earthworms at night, and impossible if the fishing trip was not planned in advance. It would be desirable to be able to gather earthworms easily during the day. 
     The earthworms should remain alive to be the most effective fishing bait. It is therefore important that the earthworms remain viable. Also, any method or composition for gathering earthworms should not be harmful to the environment. 
     SUMMARY OF THE INVENTION 
     It is an object of the invention to provide a composition and method for gathering earthworms which is less tedious and time consuming than digging. 
     It is another object of the invention to provide a composition and method for gathering earthworms which will permit the gathering of earthworms during daylight hours. 
     It is still another object of the invention to provide a composition and method for gathering earthworms which is environmentally safe and does not kill the earthworms. 
     These and other objects are provided by a composition and method for gathering earthworms which comprises the application of limonene to the soil. The limonene is preferably d-limonene. This compound is found in citrus oil. Additional compounds, such as defoaming agents, can also be added. 
     The limonene is preferably diluted in water, which mixture is then applied to the surface of the soil. The earthworms come to the surface of the soil, usually in less than about five minutes. The earthworms can then be gathered and placed in a suitable container. 
     The dilution of the composition in the water is preferably between about 1/5 and 1/20 ounces per gallon of water, and is most preferably about 1/10 ounces per gallon of water. 
    
    
     DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS 
     Compositions according to the invention preferably comprise limonene, or analogues and derivatives thereof, and most preferably comprise d-limonene. The d-limonene is preferably diluted in a suitable solvent, preferably water. 
     The dilution of the composition in water can vary. It is currently preferred that the concentration of the composition in water be between about 1/5 and about 1/20 ounces per gallon of water. It is most preferred that the concentration of the composition in the water be about 1/10 ounces per gallon of water. 
     It is possible that other compounds can be substituted for, or added to, the d-limonene in compositions according to the invention. Limonene occurs naturally in both d- and l- forms. Limonene is found in lemon, bergamot, caraway, orange, and other oils, as well as peppermint and spearmint oils. Limonene is a terpene of the general formula C 10  H 16 . This class of isomeric hydrocarbons also includes myrcene and pinene. The terpenes are found in many essential oils, including conifers. These compounds, and derivatives and analogues thereof, may also be suitable for use in the invention. 
     A most preferred composition according to the invention includes limonene, myrcene, pinene, and gamma terpinene. This composition has been found to have improved anti-foaming characteristics. This composition preferably comprises, by volume, about 0.3% to about 0.5% pinene, about 1.5% to about 1.9% myrcene, about 0.1% to about 0.6% gamma terpinene, and the balance d-limonene. The addition of known anti-foaming agents is also within the scope of the invention. 
     The composition can be applied directly to the surface of the soil after dilution in water. Preparation of the soil is generally not necessary. The preferred distribution of the diluted composition is about 0.08 gallons per square foot. More should be applied in very dry or very cold conditions, because the worms are deeper in the soil. The liquid will penetrate through the surface of the soil, and the worms will usually rise to the surface of the soil within about five minutes. The method is effective in the day or night. The worms can then be gathered by hand, or by other suitable techniques. The invention is useful for different types of worms, and particularly for earthworms. 
     This invention can be embodied in other forms without departing from the spirit and essential attributes thereof, and accordingly, reference should be had to the following claims, rather than to the foregoing specification, as indicating the scope of the invention.