This pack gives step by step instructions on how to help with a common cause of itchy skin. What is being fed is an important factor. Yeast in the gut is normally controlled by friendly bacteria but when there is a yeast overgrowth it causes inflammation in the gut allowing the cells lining the intestines to widen. This allows byproducts to enter the blood stream. Resulting in leaky gut. The longer the infection goes untreated the harder it is to treat. Symptoms of a Yeast Infection IncludeConstant chewing or licking the feetDark rusty-red hair on pawsSpeckles on the underbellyGrayish or rust color around the genitalsBlack skin (often with hair loss)Bad smell and greasy hair Ear infections or head shakingSeasonal allergies The instruction booklet outlines how to stop feeding the yeast, what supplements help manage the infection and manage the gut microbiome. There are packets of the supplements included.