Summarize the following:
Spray bottles, sometimes called atomizer bottles, can be purchased at hardware or home remodeling stores, and florists. If you want to save some money look for better deals online. It's also possible to dunk a sponge in either of the non-toxic solution, and then rub down your shower doors. The warmth and humidity will make it easier to remove any soap scum. If you don't want to take a shower, simply let the water run with all entrances to the room closed. Shake the bottle before spraying to make sure the solution is coming out properly mixed. Coat the interior and exterior of your shower doors, from top to bottom, hitting all areas you want to clean. Remember to keep the space well ventilated if you are using a commercial product with toxic chemicals. Keep all windows and doors open for several hours after cleaning and don't use more of the product than is necessary. If you use a sponge, dunk it and begin scrubbing. Start on the exterior of the doors and work around; then clean the interiors.  Look for areas where your shower doors might overlap. Remember to wipe down those areas as well. An added benefit of scrubbing is that it will help remove tougher patches of scum and grime. Depending on how long it's been since the last time they were cleaned, you will want to wait longer. Use a sponge that hasn't absorbed any of the baking soda, vinegar, or other cleaner and wipe down all the surfaces. Wash until there isn't any cleaning solution left on the doors. Finish by wiping all remaining water with paper towels to completely dry the doors. This is especially important if you choose to add a rain-repellant.  Keeping one squeegee specifically for the shower is a good habit. Regularly squeegeeing in the doors and walls after every shower will prevent the same soap scum from building up. And over time you will have to do less cleaning. Squeegees will prevent hard water stains. If you don't want to use a squeegee, microfiber towels are also well suited for glass walls and doors. Wring it out when it's gotten full of water, then continue to use it just the same. If your shower has sliding doors, then it also has metal tracks; soap scum and grime often collects here. If there are holes in the metal tracks, plug them up with paper towel or scrap cloth, then pour in your chosen solution to sit. It is suggested you let this sit overnight. In the morning, you can soak anything up with a sponge or rag, and then wipe the tracks down with water and a sponge. Wash thoroughly all the rags, sponges, and cloth you used in this step, as well as anything that came in contact with toxic chemicals.

Summary:
Pour your non-toxic solution into a spray bottle. Take a hot shower. Spray down your dry shower doors. Rub down the shower doors with your solution. Let your solution sit for 10 - 30 minutes. Wash down the doors with a watery sponge. Squeegee all moisture from the shower doors. Fill the metal tracks with your chosen solution.