Place a trash bag on your floor and then place the peels on top and simply slide it right under your skirt. Or, you could try this simple basket idea and just fill the basket as you go throughout the season. You can also use citrus oil sprays if you're not into collecting peels, but either way it will keep your tree cat free and put your mind at ease.
Just to be safe, make sure if you have an animal in the home you always wire your tree to the wall. Even though citrus is a proven deterrent for them, that doesn't mean they won't plot other ways around it while you sleep.
Do you have another suggestion for keeping your trees kitty free? Let us know in the comments below!