Doggett 32-7-7 Injecto Feed provides ingredients that are manufactured from the finest feed grade materials. Chlorides and Sulfates are not used. Tracer Dye and Penetrants - XL Fertilizers contain a tracer dye for convenience and visibility of application. Special Penetrants are incorporated to improve distribution and absorption by foliage and roots. 12-24-24 contains slow release, low salt, suspension type formula and over 58% of the nitrogen derives from Poder Blue Nitroform. Doggett XL fertilizers also contain chelate complex and wetting agents for improved absorption and suspension.