Bug Check can help ease the aggravation of fly population and other biting insects from inside and out while also promoting and maintaining healthy skin and coat by focusing on gut support. GUARANTEED ANALYSIS: Crude Protein 4 % Min. Crude Fat 3.5 % Min. Crude Fiber 20 % Max. . Saccharomyces cerevisiae Min. 3.80 x 109 Cells/lb Lactobacillus acidophilus Min. 2.10 x 108 CFU/lb Enterococcus faecium Min. 1.50 x 108 CFU/lb