Q - I have a dog who likes to chew on everything. Does this help prevent this behavior?
Yes, There are four modes in the collar. You can choose a valid mode for him to stop his behavior.
Q - Can you pair this with two collars
Yes, you can. The remote lets you sync up with 3 collars simultaneously.
Q - Can you change the batteries if it dies?
It plugs into an outlet, so you just plug both the remote and the collar in and it recharges.
Q - Does it shock through walls? If you are inside and the dog is outside?
Yes, this collar can shock through minor obstructions and walls.
Q - How long does the collar stay charged?
The collar's battery is very durable. 2-hour rapid charging, the collar provides 3-6 days
Q - Can this be worn in the ocean or pool/lake?
Yes absolutely for the lake. My dog wears his in the lake and river all the time with no issues at all. It is IPX-67 waterproof. Would advise refraining from fully covering it in water. Normal usage is fine.
Q - Are there covers on the shock probes, such as silicone or they are bare where they touch the skin?
There is a silicone cover on the vibrating probe. It can make contact even with hair blocking without causing damage to your dog. This was made with hairy and non hairy dogs in mind.
Q - Does it automatically shock them when they bark or only if you use the remote?
Only when you use the remote but it works they will understand they shouldn't bark.
Q - Can this be used on a 4.5lb dog?
Yes, it is suitable for large, medium and small dogs. Make sure to adjust the shock level appropriately for your dog. A lower level should be used for smaller dogs.
Q - How tight does this collar need to be?
After putting a collar on your dog, it is recommended that you insert two fingers and have some room. Snug is good.