Sena corporator Arun Dudhwadkar was on his routine morning walk today when he noticed the garbage at the rally ground, party officials said.
Dudhwadkar immediately asked Sena workers to reach the ground and clean the area, they said.
Accordingly, Sena workers arrived with brooms and buckets and cleaned the ground, collecting leftover water bottles and campaign flags and banners.
The 25-year-old BJP-Shiv Sena alliance split 10 days back amid deadlock over seat-sharing for the October 15 Maharashtra Assembly polls.
State BJP leaders had announced severing of ties between the two parties, blaming Shiv Sena's "inflexibility" for it.
BJP leaders had said the party would not criticise Sena during the poll campaign.