Get carpet floor tiles. If your " babies' make a mess, you can remove, hose down, and replace.

Here is a sample of carpet tiles. This is a random custom design. You could do something like this but make it look like an area rug? Or random colors. You decide.

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There are waterproof rug pads that go under the rug to prevent doggie accidents from seeping through to the hardwoods.

Indoor/outdoor area rugs, just hose them off if the dogs have an accident. They've come a long way with these, lots of great colors and patterns.

So are the dogs house trained? Can you use crates for them to be in when you think a mess is possible?

doggie diapers are a god send too.