If your doors face south or west or gets plenty of sun in other directions its probably a broken seal. Some sliders, like Peachtree wooden doors can be repaired by replacing the double glass panel but most sliders have to be completely replaced. Fog between the glass can't be washed away.
If it's in between panes, that's a fix for a pro. If you're desperate though, you can drill a small hole in the inside pane that will let it out but destroy any energy efficiency. If it's a singl pane glass door, try an auto windshield product like Rain-X on it.
Our 14 year old cord controlled blinds are all giving us trouble with raising and lowering and tilting. Many of the top mechanisms are coming unglued from the top. I ...
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Sounds like you need a dehumidifier. I would also look into better ventilation for the room. Along with condensation, comes mildew and mold.
Yes...a dehumidifier is probably your best option. The condensation is usually caused when the outside and inside temps are drastically different....
Also aside from dehumidifier, the seal on the windows may be broken.
For a temporary solution you can use a shower wipe blade, like these but I got mine a Dollar Tree for a $1..... https://www.google.com/search?client=opera&q=shower+wiper+blade&sourceid=opera&ie=UTF-8&oe=UTF-8
If your doors face south or west or gets plenty of sun in other directions its probably a broken seal. Some sliders, like Peachtree wooden doors can be repaired by replacing the double glass panel but most sliders have to be completely replaced. Fog between the glass can't be washed away.
If it's in between panes, that's a fix for a pro. If you're desperate though, you can drill a small hole in the inside pane that will let it out but destroy any energy efficiency. If it's a singl pane glass door, try an auto windshield product like Rain-X on it.