Pest Block Ultrasonic Pest Repeller - Pack of 4 - Repels Mice, Rats, Roaches, Spiders, & Other Insects - Home Pest Control Solution PACK OF 4 - Package includes 4 Pest Block Indoor Ultrasonic Pest Repellers. Great economic pest control solution. Place one in each room or area where you are experiencing a pest problem. ELIMINATES ALL TYPES OF RODENTS & INSECTS - Protect your home from unwanted pests without using dangerous chemicals, sprays or traps that can harm you, your family, and animals. Works for Rats, Mice, Ants, Roaches, Spiders, Bugs, and much more. SAFE AND EASY TO USE: Forget the harmful chemicals, poisons, and traps typically used in households and by pest control technicians. Pest Block Pest Control Repellers are 100% safe around you and your family. The Pest Block Naturally drives pests out without killing them. No need to clean up dead insects and rodents. The Pest Repeller creates an uncomfortable environment for pests so they simply leave typically after a few short weeks of use. DRIVE PESTS OUT: The Pest Block Pest Repeller uses highly-effective ultrasonic frequencies, being extremely irritating to rodents and insects thus causing them to scramble to find a peaceful area, and will be forced to leave your home. The variable technology frequency waves ensure that pests do not get immune to the sounds. Your home will be free of all insects and rodents for a fraction of Monthly Pest Control Treatments. MONEY BACK GUARANTEE: Use the Pest Block Pest Repellers risk free for 60 days. If our Ultrasonic Repeller does not help get rid of your pest problem, we will refund 100% of your purchase. No questions asked.