How can I keep the area around my bird cages clean?

Clear Plexiglas sheets attached to the side of the cage serve as a barrier to bits of food and water that they might fling onto the walls or drop on the floor. Purchase them at a hardware store and cut to fit the dimensions of the sides of the cage, or choose a custom cage protector from a bird product manufacturer. Secure each plastic sheet by using a single metal S-hook made of stainless steel that they could not possibly chew through or hurt themselves on. The hook slips over the horizontal bar that runs above the level of the feeding cup and the top of the Plexiglas sheet to secure it. The bottom of the Plexiglas piece rests snugly against the metal skirt that is attached along the base of the cage. The S-hook will keep the Plexiglass a short distance from the cage at an angle when it is propped against the base of the cage so the birds won't be able to chew at it. Most of the time it won't even get their attention. For underneath the bird cages to protect carpets/floors..... Hardware stores sell clear vinyl carpet protectors that come in thicknesses ranging from “low pile” to “heavy duty” carpet runners. The bottom is covered with small plastic grippers that gently dig into the carpet, resulting in a stable surface, which is easily swept or wiped clean. You might also try a plastic chair mat from an office supply store. Once a week, I roll the cage off the mats and take them outside to quickly hose off any sticky food or droppings. The mats can be hung over a rail, and they dry in a matter of minutes.

Would you consider using a clear, plastic tablecloth that you can dispose of when the mess collects?

I used a piece of cloth. Bring it up around the bottom about 6 to 7 inches up the sides. I wrapped a string around it. You can also use Velcro. Remove when you clean and reattach.

We have birds and have placed them on towels. The bath towels are pulled through the cage at each end. They will droop in the middle, but that's where the food and water is so it catches most of the spillage. Pull off, add another and wash the dirt away!

I have cockatiels. Boy they are messy. I tried the wrap around seed catchers, what a pain in the wazoo. First I got rid of the cup shaped seed feeders & put the tube feeder instead (very cheep in the bird section of the pet store) & attached it way down low. No wasted seed either. 20 years now no seed hulls on the floor. I also got the water bottles with the spout with the ball, they are called lick spouts. Set them down low also. Way easier to clean, way easier. Who knew... the birds loved them immediately.