Critter Pricker was developed by a wildlife removal professional to give homeowners and professional WCO a proven tool to deter wildlife and humans. The Critter Pricker is a patented humane, cost-effective prevention product for raccoons, other nuisance animals and human deterrent . The strips are made of strong polypropylene plastic that have sharpened cones that when built together make a mat. Once the mat is placed in front of pool steps, Trash cans or weak Roof soffit it will be the first thing the animal touches. It will be to uncomfortable to go any further The patented interlocking snap and hook design strips can be connected side by side and end to end.The base of the strips are 1.5” wide and can be fastened to multiple surfaces using a variety of materials such as screws, adhesives, and even zip ties. The Critter Pricker can be used to defend your property walls and fences from burglars or trespassing individuals on your property walls with added security. **Please note if you have any questions reguarding the Critter Pricker Please send us a message for a free one on one consult with a wildlife professional. You can conveniently now send us photos to help you measure the amount of product you might need.******* Most pools need 4-8 boxes Most roofs need 3-5 boxes Trashcans need 6-8 boxes