Empty bee hive

I found a bee hive high on the wall inside the roof corner.
When I was gardening, exchanging pot and cutting the branch I happened to find it unexpected.
I really worried about the bee hive again because I had found two years before back of the compressor of the AC. Then I had to buy new AC and exchanged the old one.
I don't hate bees so much but they gave me damage and I had to remove them from my house.
Then I soon examined the nest for a while if bees in there. But it seemed almost empty. I killed the nest by the killer spray and asked my father to remove it.
It was about 7cm round, not so big as before two years ago.
2 years ago