Scooter cover.

[Waldorf]

Tucano Urbano cover excellent for preventing condensation

That'a the one I have; I bought it for my Silverwings but it does very well for the Forza.

[Filonian]

Why cover it at all in the garage? I don't and it avoids potential condensation problems as mentioned. The bike will probably attract some dust over time but that's easily wiped off, which is preferable imo to the risk of condensation which can have nasty effects if left too long.

My garage is a precast concrete garage not attached to the house. They are not the best for air-tightness so if warmer air is blown into the garage it will cause condensation on ANY cold solid surface. I keep my bottles of beer in the garage, well it is nearly christmas and they always are covered in condensation when the air temp changes.
I have found over the years that covering as much of the bike as possible prevents any damp or condensating air being in contact with the cold surfaces of the bike. I use old mattress protectors because they are quilted and provide a degree of insulation.
I agree with you that condensation can have nasty effects, but covering up well is the only way that I can avoid it.
My friends 7 BMW's were kept in a damp garage but covered with old quilts and kept rust free.
Horses for courses but a lot depends on where in the country you live, living on the coast it happens a lot during the winter months.

[newscooter]

Everything got damp and rusty when I had a precast concrete garage. Now that I have a garage built from breeze block I don’t have any damp problems, maybe the tiled roof instead of corrugated ‘asbestos’ helps . Who knows, I’m not complaining !

[Data]

My cotton dust sheets keeps the condensation away. My garage is a reinforced concrete prefabricated unit, well vented but the bikes get covered in condensation at this time of the year unless covered. Tried several things to stop it and the cotton dust sheet works the best. Virtually no condensation anytime.