Placenta previa facts. 1  Placenta previa is the attachment of the placenta to the wall of the uterus in a location that completely or partially covers the uterine outlet (opening of the cervix). 2  Bleeding after the 20th week of gestation is the main symptom of placenta previa.
FRONTLINE Brand Products remain effective for 30 days, even if a pet swims or is bathed. After application, keep the dog or cat from getting wet until the application area appears dry, usually 24 hours. If a FRONTLINE Brand Product is to be applied after a bath, make sure the pet is completely dry before application.
During the month between Frontline applications, your dog can do swimming or take a bath -- but the more he does, the less effective the Frontline may be toward the end of the month. During tick season, you'd be wise to apply every three weeks, particularly if the dog swims much.