![]() Because ground squirrels are not normally active during the cold winter months, these chemicals should not be used at this time.įumigation of burrows is an effective technique. Directions on all toxicant labels should be read, understood and followed exactly. Restricted-use pesticides are available but can only be used by a licensed pest control operator or a person who has a private applicator’s license that permits the use of such chemicals. Rodenticides provide the most economical method for controlling large populations of ground squirrels. Regular control may be required to prevent re-infestation from surrounding populations. Where ground squirrel populations are high, several control methods may need to be used at the same time. Ground squirrels can be controlled by a number of different methods. Their burrowing and gnawing behavior also can cause damage in irrigated areas. They may dig up newly planted seeds, eat sprouting plants and weaken earthen dikes with their burrows. In rural areas, ground squirrels can do extensive damage to cropland or pastures. However, they will feed on flowers and vegetables in gardens, and their burrows can be a nuisance. Ground squirrels normally do not cause extensive damage in urban areas. Rock squirrels and thirteen-lined ground squirrels may hibernate during the coldest periods of winter. Dirt piles around the entry holes are seldom evident. The burrow system usually has two entrances. Ground squirrels live in burrows that are usually 2 to 3 inches in diameter and 15 to 20 feet long. The rock squirrel and thirteen-lined ground squirrel are the two species that most commonly cause damage by their burrowing and gnawing. Rock squirrels are nearly always found in rocky cliffs, boulders, and canyon walls. Most ground squirrels prefer grassy areas such as pastures, golf courses, cemeteries and parks. These are the thirteenlined ground squirrel, Mexican ground squirrel, spotted ground squirrel, rock squirrel, and the Texas antelope ground squirrel. There are five different species in Texas. Ground squirrels are small, burrowing rodents found throughout the state, with the exception of extreme East Texas.
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