When is a landowner allowed to shoot at a trespasser? According to Section 9.42 of the Texas Penal Code, a landowner can shoot at or use other deadly force against a trespasser if the landowner reasonably believes the land or property cannot be protected or recovered by any other means, or that the landowner himself would be exposed to substantial risk of death or serious bodily injury if the landowner does not use deadly force. A landowner can also shoot at or use other deadly force against a trespasser if the force is immediately necessary to prevent the trespasser's imminent commission of arson, burglary, robbery, aggravated robbery, theft during the nighttime or criminal mischief during the nighttime; or to prevent the trespasser who is fleeing immediately after committing one of those acts from escaping with the property. "Criminal mischief" includes "knowingly or intentionally damaging or destroying, tampering with or marking, inscribing slogans, drawing or painting on tangible property " of the property owner.
Using potentially dangerous measures to protect your property is not recommended in all cases, as it can expose a property owner to possible physical harm and also criminal prosecution if too much force is used. However, property owners should be aware of, and exercise, their right to protect their property under the proper circumstances.
How to Deal with Trespassers on Your Property : Equine Law Blog
Not good idea!