The collar should be placed above your dog’s collar as high on the neck as possible for the best results and the bark collar should be tight enough for the shock spikes to touch the skin and not allow it slip down the neck. However, you can use rubber spike caps to soften the impact of the collar
Free shipping on all orders + а pest repeller for free if you buy $149+ worth of goods! 
The collar should be placed above your dog’s collar as high on the neck as possible for the best results and the bark collar should be tight enough for the shock spikes to touch the skin and not allow it slip down the neck. However, you can use rubber spike caps to soften the impact of the collar