I wouldn't recommend it for curtains. It always sucks, it's like a hoover on curtains. It's good for thicker things like sofas, carpets and mattresses. We put curtains in the washing machine, I don't know which combination appliance is available...
The use of chemicals is an option. Plus you can set the appliance to steam-only (no need for chemicals), wash mode or a mix of both (chemicals will help with cleaning in this case).
The "SpotClean HydroSteam Pro" device from Bissell can be used for various surfaces such as carpets, upholstery, car interiors and even tile grout, but it is particularly suitable for soft and textile surfaces.
It may be less effective for cleaning bathroom grout, especially when it comes to hard surfaces and tight spaces. However, it is equipped with a multi-surface tool and other accessories that offer some flexibility. However, it is not specifically designed to thoroughly clean bathroom grout.
If you specifically want to clean grout in the bathroom, a device with a crevice nozzle or a special grout cleaner might be more suitable.
The Select does not come with wheels (which is a joke, as the mounting device is included). Also, only the wide and the very narrow brush are included in the scope of delivery (the Pro comes with a medium width brush)
That's it... same device, different name ¯\_(ツ)_/¯
According to the manufacturer, the following is included in the scope of delivery:
-7 cm hard stain brush
-12 cm hard stain brush
-multi-surface brush
-HydroRinse tool
-4 wheels with double castors
-Spot & Stain Pro Oxy cleaning agent
-User manual & safety instructions