Genius HI is a product designed to identify early signs of illness in cats by changing color upon contact with urine, indicating potential health issues. To use it, sprinkle Genius HI over new cat litter once a month, and after the cat urinates, compare the urine color to a provided chart; any color other than light to dark yellow suggests a need to consult a veterinarian. Additionally, Genius HI can be mixed with regular cat litter to neutralize odors after testing.