i also have had the same trouble with mine i have 4 adults and when 1 starts they all would follow suit ,i tryed sonic barking devices for the yard and house i also tryed the sonic collars ,water bottles a home trainer nothing worked ............... but then only by accident did this happen i dropped a can of my husbands screws on the floor and oh my goodness there was a scatter of yorkies and silence oh my goodness,then when she started again i shook the can and wow it was dead quiet .i now have 6 coke cans with about 8 or so screws in each one, i have 1 at the door 1 outside 1 in the kitchen and i tell you after all this time our house is finally quiet ,dont get me wrong they should bark to let let you no someone is there or when they are playing but not all the time and over nothing. dont no if that helps but we have been trying to figure it out since gracie was little that was 4 years ago .i can now say we have a quiet house even our friends have noticed the difference
__________________  |