I use cheap disposable plastic lab pipettes to direct a small puff of
air to the dust spot itself.  The plastic pipettes work really well for
me - I'm happy to get the end really close to the sensor surface - as if
it does accidentally touch, then it's not going to do any damage.  When
I've used larger blowers, it seemed to me that shifting so much air
around sometimes resulted in more dust on the sensor than before I started.
If the dust spot is too small to see on the sensor filter, then IMO it's
too small to worry about at normal working apertures (I've got quite
good close vision without glasses though).  I last needed to wet-clean
the sensor about 9 months ago.  However, as it's spring here now, I
expect more problems over the next month or so - as I think some of the
really sticky stuff is pollen from flowers. While most pollens in the
air are from wind pollinated flowers and aren't sticky pollens from
insect pollinated flowers - there seems to be enough of the latter in
the air to cause problems.