I've now received information from Sony on sensor cleaning. Blowing is #1 obviously and a wet clean with Eclipse is #4. In between these Sony use the Cleaning Stick I (part number J-6082-712-A) and Cleaning Stick II (part number J-6082-726-A). These are available commercially, from Amazon, for example.
The Cleaning Stick I is like a very small sensor swab, about 5mm wide. To remove dust gently slide the tip of the stick over the surface. To clean the tip quickly shake the stick a few times up and down (as per tech bulletin below). So ... no liquid, just a gentle dry rub. (I guess followed by further blowing).
The Cleaning Stick II is like a VERY small Sensor Gel Stick. The tip is about 2mm wide and it is designed to lift off individual bits of dirt or stuck dust. Sony call this pin-point cleaning. It works particularly well with the Photographic Solutions Camera Sensor Magnifier as it's possible to use the stick with the magnifier/loupe in place. This stick is suitable for use on IBIS sensors according to my source.
If a wet clean is needed then to remove any smears that may be left behind, blowing gently with the mouth onto the sensor followed immediately by wiping with a dry swab should do the trick (to get some dampness on the sensor, just like blowing on a lens and then wiping it with a cleaning cloth).
Cleaning the sensor in a high humidity room is a good idea (for example a bathroom after a shower) as it will minimize the amount of dust in the air; and a slight humidity on the sensor is useful.
I now have the Hepa Jet blower and it is really excellent as it delivers a good strong blast of dust-free air onto the sensor.
Hope that's of use to you
Robert