Ok I need some advice in a slightly awkward situation. ... slightly odd elderly neighbour lives next door to me. His wife has been getting v v upset about cats using their lawn as a toilet....I get on well with my other neighbours . Odd neighbour told me had sprinkled slug pellets on lawn to poison the cats 
What do I do......
- approach odd neighbour but he's v unapproachable. .....
- tell nice neighbours to keep their cats in ?! But unrealistic and they are likely to go to odd neighbour and have a go ??
If they do odd neighbour will know I told them and I have to live next to him.....If I don't cats might be poisoned. ..
Help !!!!!!!