She wants to stop her cats getting out, and other cats getting in. I know full well that there are numerous commercially available products that will stop cats (along with other animals) climbing fences. I'm sure they do work, but they're all fairly pricey, particularly if attempting to cover a significant length of fencing. I'm now thinking about trying a home-rigged set up. I'm considering getting a whole heap of empty 2 Litre plastic softdrink bottles (Soda bottles to any USA readers), then cutting off the base and neck of the bottles, then cutting them lengthwise, then siliconing them to the tops of the fence so the sides of the bottles "curve downwards" from the top of the fence. I'm thinking this curved plastic will be too smooth and slippery for a cat to get any grip with it's claws. I have no problem with spending some time getting this to work, but I want to keep the cost down, so spending lots of $$$ isn't happening. Again, I am aware of many commercially available products.
I was wondering if anyone has attempted anything like this, and if they can offer any advice. Thanks.
To any cat "lovers" out there, my friend isn't getting rid of her cats, nor is she trapping/baiting any of the cats in her suburb.