There are few things I like in life more than my dogs. When my kids grew up & moved out of the house, I was cheerful to see them go & grow up in their lives. However, the condo was instantly too quiet with them gone. Sure, I consistently had a dog, although I found my one little girl was genuinely lonely without the kids here too. I had consistently counted on the kids to keep the dog company while I was at work, or take him out play with her puppy friends. So my solution was just to get more dogs. I’m fairly active so I knew I could keep up with them & provide them plenty of exercise, so long as the dogs had each other as friends too! Now I have numerous dogs & they are all as cheerful as they can be. However, all of these dogs does a number on the house. All of us have to vacuum & mop a lot more often, & every one of us have to change the Heating & A/C filter almost twice as much. The first year of this, our heating & cooling plan was giving us problem, so I called the heating & AC company to take a look. They found my HVAC duct was plugged with pet hair & recommended I change the air filter more frequently. Thought I had been doing it once a month, this isn’t enough when you have as several dogs as I do. Changing the air filters out every other month keeps the pet hair in the filters & not in my HVAC duct.