Thanks Jack and Max,
I thought I was alone with this problem but it is obviously a much bigger problem than I thought
Max I have tried nearly everything that has been suggested (haven't bothered with the trapping as they all seem to say it doesn't really work), actually nothing seems to work for more than a few days. Each time I think I have won within a few says they are back as if nothing had happened.
JacK, this has been a very trying time for me and on top of it all we have this virus thing. I'm beginning to worry that my neighbours are starting to worry about my mental heath, standing outside at 11pm at night in my dressing gown watering my trees.