A study was carried out during the year 2013 to evaluate the efficacy of phostoxin (Aluminium phosphide) tablets through fumigation for controlling/killing of porcupine which is a stern pest of crops and trees. Twenty three burrows of porcupine were indentified in Chak No. 37 BB, Tehsil Qaidabad, district Khushab. To find out the active burrows, powdery soil dirt patches were created in front of each burrow and footprints of porcupines were tracked continuously for three nights. Consequently, nine burrows were found to be active and selected for the study. Three doses of phostoxin tablets viz. 4, 6 and 8 per burrow were used. A long stick fitted with a spoon was used to put the phostoxin tablets deep inside the burrow and the burrows, thereafter, were closed. Maximum number of animals per burrow was three and minimum two. Average number was 2.55 per burrow. Four tablets per burrow proved to be ineffective as no animal was killed in such burrows. Total number of porcupines in three burrows treated with 6 and 8 tablets per burrow, was 7 and 8 respectively. Five (71.43%) and eight (100%) porcupines were killed in the burrows treated with 6 and 8 tablets per burrow, respectively. Conclusively, treatment of 8 tablets per burrow proved to be the best while 6 tablets per burrow stood second. The farmers are recommended to use 8 tablets per burrow for controlling the porcupines in farmlands. [ABSTRACT FROM AUTHOR]