A landowner must use reasonable and ordinary care to keep the premises safe for an invitee, defined as one permitted to remain on the premises for purposes related to the owner's business. Bramble, 264 Md. at 521, 287 A.2d at 267.
A licensee by invitation is a social guest and is owed a duty of reasonable care and must be warned of known dangerous conditions that cannot reasonably be discovered. Id. at 521-522, 287 A.2d at 267.
A bare licensee is one who enters upon property, not as a social guest, but for his or her own convenience or purpose and with the landowner's consent. Mech v. Hearst Corp., 64 Md. App. 422, 426, 496 A.2d 1099, 1101 (1985), cert. denied, 305 Md. 175, 501 A.2d 1323 (1986). No duty is owed to a bare licensee except that he or she may not be wantonly or willfully injured or entrapped, nor may the occupier of land "create new and undisclosed sources of danger without warning the licensee." Sherman, 282 Md. at 242, 384 A.2d at 79. Under some circumstances, the landowner may be liable to a bare licensee for a dangerous condition known to the landowner. See W. Prosser, The Law of Torts § 60, at 417-418 (W. Keeton 5th ed. 1984)
Finally, a trespasser is one who intentionally and without consent or privilege enters another's property. Id. [264 Md.] at 522, 287 A.2d at 267. No duty is owed, except to refrain from willfully or wantonly injuring or entrapping the trespasser. Id. This rule of limited liability to trespassers permits "a person to use his own land in his own way, without the burden of watching for and protecting those who come there without permission or right." W. Prosser, supra, § 58, at 395 [footnote omitted].).