Question Author
Thank you all for taking the time to give me your ideas. I'm going to comment on some of the answers, but I really am grateful for them all.
I know fruits are cheap in season, but my trees were bought by people I love as presents, and I would like to be able to benefit from their kindness.
A cat or a dog might help, but I'm afraid we couldn't afford to have such a pet these days, on a fixed pension, and also neither of us can
walk very far, so exercising a dog would be beyond us.
Our garden is very small, and we inherited full borders that need low maintenance, so it would be hard to plant things the squirrels don't like without digging up the lot. Again -at 86 and 89, not the easiest thing to do.
I shall try as many of your suggestions as I can - apart from the shooting one - and I won't stop feeding the birds. I'm going to buy some moth balls to scatter, and also try the chilli pepper idea. I have an electronic scarer someone gave me which I have not yet used so I'll try that too.
I hope I haven't given the impression that we are pathetic old folk, far from it but sadly there are things we can't do physically, or afford. Thank you all again, and any more flashes of brilliance will be welcomed.