To help a blind dog navigate your home, ensure safety by pet-proofing and adding guidance aids. Remove hazards like toxic plants, wires, and chemicals. Place textured mats or carpets to create tactile pathways that guide the dog. Use scent markers, such as stick-on air fresheners, to help the dog identify different areas. Install baby gates to block off stairs and unsafe rooms. Consider using a bumper harness to prevent collisions, and a fountain-style water bowl that makes noise, helping the dog locate it. These modifications will enhance the dog's comfort and safety.