Our next door neighbour has two dogs. The houses have fairly long narrow gardens and they have a kennel at the end of their garden where the dogs are left during the day when they're at work (usually at least 8-3 every week day). If the dogs are out there and any of us (or another nearby neighbour) go in the garden one of the dogs barks and barks until we are out of sight and silent. Sometimes it keeps barking regardless. We've been here about a year and I've tried to tolerate it thinking the dog might get use done to us but it hasn't improved at all. We have young children and I work part time from home so we want to use the garden sometimes during the day. It's made me miserable this summer because we haven't been able to have lunch outside and the kids rarely play outside for long because the noise is too much. At weekends the dog can be noisy but goes quiet when the neighbours ask it to (it doesn't work for me, I've tried).
The neighbours are aware of the issue and have previously said that they've changed their working hours to be around more but it's still a problem. I even dread hanging the washing out. The neighbours are nice enough and I don't want to upset them (bizarrely one of them is involved in something connected to my DH's work so we definitely need to stay on good terms).
What can I do?