When an infestation persists, one of the more effective methods of elimination involves getting rats accustomed to traps before setting them.  To introduce a trap, place it in an active area but don’t set it. Allow rats to feed off this “safe” trap for a day or two. Once the critters have accepted this object as part of their regular turf, bait the trap again, but set it up to snap the next rat that crosses its path.
I bought one from Groupon, only 15US$ I just try it today, try to get rid of cockroach, 2 inches big one from my kitchen. I wonder, will it drive it out of the kitchen into my living room? By the way, the using the device as a hammer comment was funny.
Designed for indoor use or anywhere it’s not exposed to outdoor elements, the reusable Rat Zapper Classic Rat Trap provides years of effective rodent control—perfect for attics, garages, basements, and sheds.
Water is the main threat of such devices. Only Rodent Terminator Trap of all other traps described is claimed to be water-resistant, although you never know for sure. Any moisture inside the gadget will lead to problems, so either you shouldn’t use it outdoors at all or you should cover it securely (with a case or place it inside a waterproof container). The same applies to changes in temperature: in extreme heat or cold, the tap should theoretically work, but the battery will discharge very quickly. So you can go for it, if you are ready for spending additional money on batteries.
We tend to think that if we love a food, then all animals must love it as well. However, that isn’t the case, especially where aromas are concerned. The nose of a mouse is very sensitive, its sense of smell quite strong. This is why things with powerful fragrances, such as peppermint, make such effective repellents against mice.
Trusted by thousands of users, Havahart Animal Trap is made of rust-resistance wire mesh with steel reinforcements. It’s properly galvanized which maximizes its resistivity towards rust and corrosion. This is one of the best outdoor rat traps on the market.
Rats are heavier, stronger and smarter than mice, so snap and glue traps won’t do for them. They can co-operate to steal the bait from a mechanical trap. Sticky traps can catch a young rat; mature individuals will be able to escape from it within an hour or two. That is why electronic traps are the best solution against rats.
It has over 2700 customer’s reviews on Amazon.com that includes a very helpful ones for the following users of it. First, don’t overbait thе trap because a big dose of a peanut butter or other stuff can lead to the trap’ zapping the bait and de-activates then. Also, users think it’s better to use sun flower seed butter or dog food than a peanut butter. Rodents’ tastes differ as humans.
From what you have written, I assume they are outside your apartment and not inside? The best thing to do is remove all food sources, places where they can build nests and nesting materials. Make your property an unfriendly place for rats to live.
In 2001, the Federal Trade Commission sent a warning to manufacturers of ultrasonic pest control devices, demanding that claims of effectiveness must be backed up by scientific research. Thanks to the FTC intervention, package claims on ultrasonic rodent and insect devices are a little less preposterous than they used to be, and many product websites have links explaining their research methods and results, such as these from Green Shield and Victor.
more information about

Garbage, one time use, piece of junk. Victor used to make great products, but this plastic lever is junk. Don’t waste your money on this one time use trap. Victor should go back to the metal lever instead of scamming people.
I am the best mouser in our house (and we have three cats!) Like you, I found that rodents can eat peanut butter or cheese right off a trap without springing it. So I took to cooking a piece of turkey bacon until it was just shy of crispy, then I threaded a needle and “sewed” it onto the trap. Then I put the trap between the cabinet and stove so that the mice could only approach it from the striking side (and if the cats stuck their paws in there, the trap would spring away from them).
This entry was posted in Rats and Mice and tagged history of mouse traps, homemade mouse traps, how mice traps work, when were glue boards invented, who invented mouse traps, wood mouse traps. Bookmark the permalink.
Please be aware the sound is 25,000 hertz just out of the human hearing range. Cats can hear 70,000 hertz and dogs are around 45,000 hertz.  Every pet but birds can hear the sounds. The sound is a varying high pitched constant sound. It works great for mice in the attic but if used in the home the sound will bounce off of walls and under doors.  I shut the door in  my bed room and 3 cats and 2 dogs reacted in the other room.  Your pets may get used to it and most people don’t  know. Since my animals reacted I knew it was in their hearing range.  I did a little research and found they are not allowed to be sold into Canada.  Their government protects it’s citizens.  Our military service also does not allow purchases of electronic repellers do to false claims and no proof of effectiveness. Attics and garages are fine, if the pets are not in that area.  Customers please spread the words to your friends on social media.  All electronic repellers are same and people dont know. I tested on ants and fleas who had no reacton.  I think it works for rodents and squirrels in enclosed are areas.  If the company responds i want facts and no bs fake talk.  If it really worked for fleas and bedbugs and ants prove it with facts.  Show me a video or send me the testing results.   
Snap traps are the most practical option due to their low cost which lets you affordably place and set many traps at once.  However, snap traps are a little hard to use and some folks prefer other options.
Rats that regularly find their way to our dwellings are indeed annoying and nasty pests. Unfortunately, they can surmount all the hurdles and gnaw through everything to get into seemingly impenetrable, hard-to-reach places. Moreover, they transfer serious diseases, attack humans and pets, contaminate food and make a mess. Rat control measures involve traditional and modern methods of extermination, such as sealing up the homes, using rat predators, snap traps, poisonous baits, rat zappers, glue boards and others. In all cases, the best option is to start from the removal of mess (where they find their shelter), water and food sources. You can purchase different types of snap traps or make your own homemade rat trap to get rid of coming pests.
Once crimped, insert the wire into both holes. You will need to bend the second side of the wire to get it in the hole. Just straighten the wire after it’s through the hole. Center the can over the bucket opening and bend the spare wire on the outside of the bucket around the bucket rim to keep the can centered over the bucket.
Though they may seem practical, mouse glue traps are probably one of the most inhumane ways to catch a mouse. Once the mouse is stuck to the strip, it will remain alive until one of the following happens:
Live traps are generally larger than standard snap traps.  The larger trap size can be more of an issue to the rat and can create “trap shyness”.  Live rat traps also create another problem – the rat is alive when captured.   The rat has to then be relocated far enough away that it can’t find it’s way back.  That usually means a trip in the car or truck to let it go somewhere.
Like Mark says above, when it was plugged in, my dog reacted to it immediately. I tested this by plugging and unplugging it, and it was obvious that the sound of the repellent (not audible to us) was bothering him.
Not do be out done many homeowners have sought to one up Atkinson and start their own 112 year streak of mouse trap dominance. Here are a few of the ideas and you can decide if they’re up to the challenge. Click on the pictures to enlarge and leave a comment as to which one you like or tell us of one of your own.
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There are several different types of rat traps available on the market, the most effective being the electronic variety. An electronic trap detects a rat’s presence using its metal floor plates and delivers a high-voltage electric shock to the animal with the help of batteries. When a rat enters the trap (to find a non-lethal bait attractant) and steps on the plates, the rat completes the trap’s electric circuit, triggering an electric shock to the pest. The shock typically lasts anywhere from one to two minutes to prevent the animal’s heart from restarting. Some electronic traps offer remote operation designed to alert you when a kill has been made using a red or green light. When the rat has been eliminated, disposal is accomplished without having to touch or see the animal by sliding it into the trash.