YES! The SwiftPaws Home drive is electric - so it is safe to use indoors.
But consideration must be given to the surface you intend for your dog to run on. If it is slippery, or hard or rough enough for our pup to get hurt in a fall, then it might be a good idea to take the setup outdoors.
If you're considering an indoor setup on concrete, we do not recommend this. Ideally the play surface should be sufficiently padded so that your pup doesn't get hurt in a fall, or suffer injury to it's pads.
You will also have to tether and anchor the drive and pulleys - so you'll need something weighted, like sandbags (not included) - as the ground stakes that come with SwiftPaws cannot be used indoors.