The proven Phaser formula which was revised in two years of comprehensive development work at the Leovet laboratories offers absolute protection against all insects and horse flies. An optimised blend of active ingredients guarantees stay-off effect and long-lasting effectiveness for up to 7 hours. Due to the use of a stay-on polymer the long-term technology ensures permanent adhesion and a guaranteed effect even when the horse sweats. The strong repelling effect results from a special combination of the in-house fragrance formula with two active ingredients whose capabilities have been proven in multiple tests. Despite its powerful reputation it is gentle on the skin even for sensitive horses. Use biocides safely. Always read label and product information before use.