A Washington hospital says it called in an exterminator after a patient was discovered with bed bugs in its psychiatric unit.

United Medical Center says the patient was discovered March 7. An extermination with heat lasted two days beginning March 8.

Hospital spokeswoman Chenelle Harris told TBD.com that the patient who came in with bed bugs was at the hospital one day and that bed bug sniffing dogs detected the bugs in only one room, though three others were treated as a precaution.

An exterminator will re-inspect the hospital in several weeks.