Feed wastage is difficult to measure in most swine facilities. However, it is generally acknowledged that if feed is observed to be outside the feeder, at least 10% of the feed is being wasted. Commercially available feeders have been found to have feed wastage that ranges from 1 to 34%. The selection of a good feeder and its proper adjustment are critically important to reduce feed wastage. The feeder should be checked daily to assure the proper flow rate and accessibility of feed to the pig. A properly adjusted feeder has approximately 1/4 to 1/2 of the bottom pan lightly covered with feed, indicating an adequate feed flow rate. The addition of water to the feed "wet feeding system" has been shown to reduce feed wastage and improve feed efficiency by 5 to 8%. However, frequent feeder adjustments and the removal of wet, unused, or older feed may increase the amount of labor needed to achieve this efficiency. The addition of water to the feeders may reduce water wastage by 40 to 50% during the summer, but the growth of molds in the feeder must be closely monitored when this type of feeder is used.