Because you maintain a hectic calendar, you probably have to leave your dog at home alone on many an occasion. The good thing is that dogs act as guards who keep strangers and intruders away from your property. There have been innumerable cases of burglary, however, where the dog doors were used as the point of entry. The plain hanging screen dog doors are major attractions for burglars as they prove easy to be opened. The bad thing is your poor dog needs to get in and out of the house when you