Individual — Unwanted trees and weeds causing a havoc to neighbours

There are many vacant sites in AG'S layout Arehalli which are not taken CARE by the owners. The sites have become shelters for all kinds of reptiles, insects, stray animals' ### out, etc. It is causing a lot of trouble resulting in Allergies, fear of poisonous, non poisonous insects especially to children.
It is very difficult to trace the owners it the sites have changed hands even if the layout is an established society. How long can the neighbours clean them ...
Pl take some strong measure to instruct the owners to keep up the sites inthe interest of the environment and no nuisance to the neighbours.