We need to feed our cats a diet that has living energy in it. Dried food doesn't have any living energy- it's all cooked out.
Long term dried cat food diets cause many problems such as rotting teeth, bladder stones, cystitis. etc.
Robert McDowell has been treating animals with herbs for 20 years. It has only been in the last 5 years that we have had an increase in diseases that we would rarely see in cats-diseases that only humans have been subject to. The increase in the rate of cancer & diabetes alone in cats is very alarming. And this is common to cats all around the world. The only common link cats from all nations have is a reliance on dried & tinned cat foods. I really feel as we keep our cats indoors to curtail their wandering & killing of small animals & birds we have then made them reliant on eating this over processed diet of tinned & dried foods resulting in metabolic & systemic diseases.
If you feed only dry food then maybe you need to introduce wet foods as well to take the drops of herbal medicine.
A raw meat diet is preferable. There are many cat meat products available in supermarkets.