This will all depend on your humidity. You can do all the above if really needed. I live in southern AZ, I only need to spray when they shed. Using my Acurite hydrometer ($12) it states I have around 50-60% humidity in my tubs. I use regular cereal bowl sized water dishes for my 28qt tubs and dog bowls for my 41qt tubs. That's all it takes for me. You can adjust your techniques depending on your findings.