Use of chilli-filled grenades as an alternative to pellet guns, which will be used in rarest of rare cases, was cleared on Saturday by Union Home Minister Rajnath Singh for crowd control ahead of the visit of an all-party delegation led by him to restive Kashmir on Sunday. The Home Minister cleared the file for use of Pelargonic Acid Vanillyl Amide (PAVA) also called Nonivamide as an alternative to the pellet guns, official sources said. They said as many as 1,000 shells would be reaching the Kashmir Valley on Sunday.