The best thing to clean the outside of your windscreen is a glass cleaner like Windex. It is designed to remove residue left on the surface and leave a streak free finish.
Its Obvious That The Wipers have Work Hardened,the best solution is to replace them...it also helps to clean your windscreen with vinegar
Read, clean,
sunscreen
A mixture of water and vinegar is the best thing to clean the inside of a fridge with. It is effective at removing stains and odors, and is safe for food storage areas.
If you are outside an earthquake then the best thing to do is not to go inside the earthquake zone - until the earthquake and aftershocks subside.
If a windscreen is obtained second hand, it may need to be trimmed to fit your car. Then you must remove the plastic mouldings from the edges of the windscreen. Then the windscreen is primed for the caulking and placed in the car. It is best to use gloves during this process.
Sea Salt Spray
go outside and play a game
The best way to keep a toilet clean is to regularly clean it with a toilet brush and cleaner, wipe down the outside with a disinfectant, and avoid flushing items that can clog the toilet.
The best thing to use to clean Canon lenses is a microfiber cloth. This prevents the camera lens from getting scratched and is also very portable and easy to use.
To clean the outside of a printer, wipe it off with a clean cloth. The inside is best cleaned with a special vacuum cleaner attachment, compressed air, and a soft brush.
Replacing a windscreen is a specialist task best performed by a trained and/or experienced individual / professional. Is this a question in general or do you have a particular windscreen in mind?