I bought one a few years back.
05
I found that a fresh set of batteries would soon not have sufficient energy to kill the rat which resulted in it triggering but not killing. I saw a rat go into it and run backwards out of it much to my upset!
I asked whether I could buy a power supply for it and the answer was no, not for the UK.
So... I made my own little modification to it = I connected 6V DC up to the wires that went to the (6 volt) battery pack.
I then caught 9 rats in a row but they were all youngsters. It took a week before they went in there and the older rats were too smart and wouldn't go into it. I had to use the airgun for them.
The next year I found it had got soiled with food and I stripped it down to clean the electrified plate but however much I cleaned it, it would arc and trigger. I eventually gave up with it after a few hours trying to get it not to trigger...
11 and then it went in the bin.
I would say the big problem is it drains the batteries too quickly (putting my electronics hat on there will always be some leakage of high voltage to ground which I guess does this) and the gap between charged metal plate and earth plate should be air, not plastic as there always seems to be some slight muck / grease that causes it to arc and trigger - especially when you are having to put bait inside the end like tuna or cat food etc. which even on a plastic lid soon gets spilt by the electrified rat!
Finally, I think it should be water resistant so you could put it outside in better locations.
Hope this helps...
