Araldite is difficult to remove once it has fully cured as it becomes very solvent resistant so it cannot be readily dissolved. The best way to help remove it is to heat it, above 70°C Araldite will start to soften making it easier to scrape away. It will still come down to using mechanical removal to get it off. If the Araldite has not cured, ie is still liquid you can wipe it off using Acetone or sometimes Methylated Spirits also works.