Effective Security Spikes: Prevent birds, animals, cats, dogs, and intruders from crossing the perimeter of your yard, garden, patio, or home. The anti-climb security spikes deter safely without harming animals. Humane Cat Spike: These harmless spikes deter cats or dogs by gently discouraging them without causing injury. Indoor Use: Protect furniture by placing the mats on tables, sofas, and chairs. Outdoor Use: Keep squirrels, dogs, or cats from digging in garden beds. Large Coverage: Interlocking design allows easy coverage of larger areas. Each mat measures 13 x 16 inches (33.8 x 42 cm). Color: Transparent Material: PET Package Contents: 8 x Cat Repellent Mats Note: Light reflection and different displays may cause slight color variations. Measurement error is +/- 1-3 cm.