brewjaz I've have seen those collars but for me that would be the last resort. She is very intelligent and learns very quickly. We have been able to completely eliminate any barking at the cat. She does not bark at outside noises when in the house but our house is very well insulated and has triple pane windows so we don't hear much outside noise. We also decided that she would not sleep in our bedroom to help prevent separation anxiety especially since she is with one of us most of the day. Other than the initial 3-5 minutes at bed time, she settles down for the night.
I don't see us leaving her alone in the trailer very often but we know at times it will be necessary. We do plan on taking some early short camping trips this spring when we can put some space between us and other campers and see how she reacts to being in the trailer by herself with outside noises.
Any transporting tips for keeping her safe yet giving her some freedom in the truck on longer trips?