Using these HQProp FlowerPig propellers is easy. Just attach them to your compatible device following the normal installation process. When using, make sure the device is in a proper environment without strong winds or obstacles. For maintenance, after each use, check the propellers for any signs of damage like cracks or chips. If they get dirty, you can gently clean them with a soft cloth. Store them in a dry and safe place to prevent any deformation. Avoid using them if they are severely damaged as it may affect the performance and safety of your device.