How often should I completely change cat litter to maintain a clean and hygienic environment for my feline companion? Is it sufficient to simply scoop out the clumps daily, or does the entire litter box necessitate a thorough overhaul at regular intervals? What factors should influence this decision? Could the age or health of my cat play a significant role in determining the frequency of such a complete change? Additionally, how might the type of litter I use affect the overall maintenance schedule? Are there specific signs or indicators I should be attentive to, suggesting that it’s time for a full replacement? Furthermore, should I consider the number of cats in my household, as this could potentially alter the dynamics of how often the litter must be replaced? In striving for optimal cleanliness and odor control, what best practices should I adopt regarding this aspect of cat care?