Barking Dogs

So a couple of weeks ago, after months of barking by the dogs-over-the-back-fence had escalated to continual daytime barking and hurling themselves at the house doors so adding another layer of noise (and with the other neighbours getting even more twitchy than me and talking about calling the Council) I put a polite note in the owners' letterbox telling them what was going on. I'd been assuming it was happening when the dogs were left home by themselves but since there were three cars parked on the driveway and the dogs were barking furiously when I dropped the note off I didn't expect much to change. But it did and we've had peace until yesterday when they started intermittent barking and yapping again. Today it's increased to almost nonstop howling. Oh dear. I should have known it was too good to last.