... and human , high efficient to bugs , cockcoaches , ants.....insecticide chalk; Dear Sir or Miss;We are honored to introduce ... customer request 1,2,3,4,5,6pcs/box; 10,12,16,30,50/box,60,100,144/box ... - tapered chalk 76(l)*9(dia)*10(dia) mm ; -straight chalk 80(l)*10.0(dia)*10.0(dia) mm ; - straight chalk ... 100(l)*10.0(dia)*10.0(dia) mm ; - ...