He campaigned against the widely used block ice, saying that it was unhygienic. He was the first person in Bangalore to attack hotels that used monosodium glutamate and other harmful additives. He exposed the widespread practice of tea adulteration in some parts of the city; used and discarded tea leaves were mixed with stimulants to make strong tea that hooked users. These campaigns made enemies of powerful syndicates. Twice ‘supari’ contracts were put out against him. Prabhakar went on, protected by the goodwill he enjoyed among admiring hoteliers.
