When placing a vaginal pessary it is best to place one of the woman’s fingers all the way in to be effective. Vaginal pessaries are used to treat vaginitis and are best placed in the woman’s posterior fornix. Because a woman’s vagina is long and elastic, placing it in the back of the fornix can maximize the effect of the medicine and prevent the medicine from flowing out. In order to achieve the deepest effect, you can lie on your back on the bed, sleep on the bed with your legs apart and use your middle finger to put the medicine into the vagina, always use your middle finger to place the vaginal pessary to the back of the vagina, and be able to put it into the back of the fornix.