Moles in St. Augustine grass
Poison is not an option due to yard pets.
I haven't even found credible pest controllers who can guarantee
removal My lawn is about 3/4 acres in size. The mole tunnels cause the
lawn surface to be uneven.
What can you advise me on this?
Tarrant County Texas moles
Packing the soil with a roller or reducing soil moisture may make the habitat undesirable to moles. Moles may also be encouraged to leave an area if insecticides are used to kill the insects and worms on which they feed. However, before leaving the area moles may increase their digging in search of food, thereby increasing the damage to turf or garden areas. Sometimes, small areas such as seedbeds or gardens sustain persistent mole damage. In such areas the installation of a barrier made of sheet metal or hardware cloth may be justified. The barrier should begin at the ground surface, go to a depth of at least 12 inches, and bend outward at a 90-degree angle for an additional 10 inches. All seams in the barrier must be secure if it is to be effective. Trapping can be a satisfactory method of control when the habits and instincts of the mole are understood. A mole becomes suspicious when its sensitive nose encounters anything foreign in its runway. Therefore, it will back up and burrow around or under an ordinary trap set in tunnel. It is not suspicious of dirt blocking the runway since burrows are frequently closed by the impact of farm machinery, man and large animals. The mole pushes its way into a dirt blockage, reopens it, and continues on its way. There are special mole traps designed to take advantage of this behavior. Harpoon and choker loop traps encircle or are suspended above the runway. The trap’s trigger pan rests on the dirt blockage. Pushing into the dirt obstruction, the mole lifts the trigger pan and releases the trap spring. Traps are available at hardware, lawn and garden, or farm and ranch supply stores. The best trap set is in a frequently used runway. A runway that follows a straight course for some distance or one that connects two systems of workings usually is in constant use. A tunnel that has mouse holes or other breaks in it is an inactive tunnel. Active runways can be located by depressing the tunnel in the evening. The following morning, the active runways will be raised again. Set a trap where the active tunnel is raised. If a catch is not made within several hours, relocate the trap to another active tunnel. Reset the trap whenever a catch is made because main runways may be used by several moles. Deeper tunnels usually are 3 to 12 inches or more below the surface, and are located along fence lines or ridges in open fields or at crossings from sodded to cultivated ground. An entire field can be treated successfully by setting traps along the fence rows in early spring at the first signs of activity. Moles may be trapped at any season, but it is not practical to do so when the ground is frozen or exceedingly dry. A little barking dag also helps.
Tarrant County Extension office, 817-884-1944