I have some pleated blinds stuck to the thermopane window frames of my apartment. It's the kind that sticks to the frame, you don't need to drill holes (this is it: https://www.amazon.co.uk/IKEA-SCHOTTIS-Pleated-blind-90x190/dp/B00RK4U1DK).
I tried to remove one but the material just detached itself from the glue and the frame, with the glue being stuck on the window frame.
How can I safely remove the blinds from the window? By safely I mean not using some toxic or intense smelling substance and not damaging the window frame?