Since it is a beagle and their instinct is to chase there may be a cheaper method. The rabbit hunters here use this so their dogs won't chase deer. http://www.huntsmart.com/hunt/Item_N...cent_BRAK.html
The scent pad at the bottom is attached to your dog's collar. The pad is doused with deer break. The dog will hate the smell of deer and not chase them. The guys here keep it on them a month then they are cured from then on from chasing deer. But still chase rabbits. May not break the barking at them but she may quit running them.
Blessings