The late W. L. Schaffer, President of the Pennsylvania Horticultural Society, had an orchard measurably free from injury by the work of the codlin moth, and which immunity was purchased by a persistent use of sweetened liquid by which thousands were annually caught. A correspondent of Vick's Monthly for May has also had a similar successful experience :

" The place selected to hang the basins should be open and easy of access. No more liquid should be prepared than is needed for immediate use, for if kept long it will lose its ripe apple or new cider smell and taste. For thirty or thirty-five basins take a gallon of rain water and sweeten it, and then add a little vinegar to give it aroma, for it is the ripe apple or cider smell that attracts the moths to their liquid graves. I think Sorghum molasses is best for sweetening. The time for commencing the use of the bath will depend on the season, somewhere from first to fifteenth of May, and it should be continued until July, when the first brood of moths will have been captured".