Consider Hiring a House-or Pet-Sitter
The best way to make sure your house is safe while you're gone is to have someone you trust still living in it. You may be lucky enough to have a tidy and conscientious relative who'll move in temporarily and water the plants, feed the pets and pick up the newspapers. If not, there are services you can use for house-sitting and pet-sitting while you're away. This can be a pricy option, but it's a solution that touches all the bases.