Things You Will Need
Garter snakes grow up to 3 feet long, but their girth remains narrower than most snakes. With more than a dozen species throughout the United States, these common snakes keep small pests under control and should not be bothered, if possible.
Inside
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Create a 2-foot by 2-foot square using a glue gun or a staple gun to attach glue traps to a firm surface such as plywood.
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Lay the trap against the wall where the snake will likely cross.
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Check the trap at least once a day.
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Move the entire trap outside once the snake is caught.
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Pour vegetable oil on the garter snake to break down the glue and release it.
Outside
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Construct two sets of mesh fencing at least 2 feet high and long enough to parallel the width of the area where the snake has been located.
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Place the fences in a "V" shape but leave a 1-foot gap between the two fences. The fences funnel the snake to the gap.
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Bury a large bucket until the rim is level with the ground.
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Cover it with a material such as a mat or cloth, which easily falls into the bucket.
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Check the bucket often because other animals may fall into this trap. Garter snakes may also fall into the trap without the material.
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Wear thick gloves to pull the snakes out of the bucket for relocation.
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Remove the trap as soon as it has served its purpose to avoid trapping other animals.