Hyssop Incense Comes In 45 Sticks. (3 packages of 15) Each Stick Last Approximately 30 To 40 Minutes. 11" Sticks The Priest used hyssop During The Sacrifice. They Would Take The Branch Of The Hyssop Tree And Sprinkle The Blood Over The Sacrifice For The Use Of In The Sin Offerings. It Is The Symbolic Of The Covering Of The Blood Of Jesus.