2. A trespasser is liable for any damage caused to the property and generally cannot hold the owner liable for injuries sustained on the premises. However . . . a) While a property owner can use reasonable force to remove a trespasser, the owner can be liable for injuries if the owner acts unreasonably. b) Under the doctrine, children do not assume the risks of the premises if they are attracted to the property by some object, such as a swimming pool, an abandoned building, or a sand pile