Your robot vacuum may already work well enough, but there are a few tweaks that can make it even better. A big factor in your robot vacuum's performance, it turns out, is actually you.

It's important, though, to make sure it's actually time for an upgrade, considering vacuum cleaners are an investment ranging anywhere from about $150 to $1,500. Is it time to purchase new hardware?

Robot vacuums are being released with higher and higher suction power, but it doesn't always translate to more effective vacuuming. Here's what else to look at when choosing a robot vacuum for ...