Constipation generally occurs if you have three or fewer bowel movements each week, and your stools are hard, dry, and difficult to pass. In this situation, Fleet Enema can provide help and relief. Fleet Enema is a saline laxative. Saline laxatives work by drawing water into the colon which helps produce a bowel movement. This provides a soft stool mass and increased bowel action. A bowel movement should be stimulated in 1 to 5 minutes, without pain or spasm. Fleet Enema is also ideal for bowel cleansing before undergoing a rectal examination.