Squirrel Proof "Treat Your Own" Seed Saver Treatment can be applied to any birdseed in order to make the seed unpalatable to squirrels. Conditions squirrels to make the association between taste they don't like and smell of the food. Effective, safe, government approved and is manufactured from only all natural food ingredients. Produces an all-natural vitamin-enriched mix that is more nutritious for wild birds. Willl not readily wash away in rain but it is advisable to re-apply periodically.