these nests were empty. i only ever remove them if they are empty.
I was going thinking of jet washing them, then i thought about using my wfp, but these would cause too much mess. So i just got out my tripple ladders and (whilst being footed) climbed up with a bucket and trowel, and just knocked them into the bucket, and painted the area after.
It only took about 30 mins! .... lovely job!!;D