Wall Connector- what's a good product to put the cable thru underneath the garage door? I don't want any gaps for vermin to get in. If using something that wraps around cord, when charging ok to leave that piece on the cable and ok to leave it hanging but not touching the actual wall charger? I don't want to pinch the cable. For ease of use, I'd rather not be putting and taking off something off the cord. Thoughts?