Hello! My 6 month old pup has started barking when out in the garden...looks like she's not barking at anything in particular, the wind in the trees possibly. I'd really like to nip this in the bud ASAP as we have a big garden that she's been using so much so far but I have to take her in when she barks as I don't want to annoy the neighbours. Does anyone have any training ideas to reduce/stop this? Thanks!