Its not only inhumane to kill stray dogs but also not legal.

1.Please remember that the only humane, legal and scientific way of dealing with street dogs is to get them vaccinated and sterilized under Animal Birth Control Programme (ABC). Under this program, stray dogs are picked up, neutered, vaccinated against rabies and released in the respective areas from where they had been captured, which is in accordance with the Animal Birth Control Rules 2001 framed, under Section 38 of the Prevention of Cruelty to Animals Act 1960 and as per the orders of Honourable Supreme Court of India.

2.It is the fundamental duty of every citizen of India to have compassion for all living creatures. Article 51A(g).

3.To kill or maim any animal, including stray animals, is a punishable offence. IPC Sections 428 and 429.

4. Stray dogs that have been operated for birth control cannot be captured or relocated by anybody including any authority. ABC Rules, 2001.