BCI began to rescue, spay and vaccinate street dogs and also persuaded pet owners and people taking care of street dogs to bring them for treatment free of cost. By the early 1970s, the number of stray dogs killed by the corporation was so high that the Central Leather Research Institute started designing products such as neckties and wallets from dog skins. By 1996, as many as 135 dogs were killed each day by the corporation, which employed various methods including administering a saturated solution of magnesium chloride directly into their hearts, poisoning, electrocuting, clubbing to death and burying alive in pits covered with bleaching powder and pesticides.