Dachshunds, especially miniature dachshunds, have a reputation for being difficult to housetrain, and I can say from experience that I found that to be true (and still do!). But there are ways to minimize the effects of potty accidents if you are prepared before you bring your pup home.
You will need a crate. This is the number one tool that will help you keep your sanity. You can’t watch an active pup 24/7, so crate training will be a first priority to prevent accidents all over the house. If the crate is used as a quiet, safe place to rest after play and potty time, your dog will come to see this as their little corner of the home.
To expand their geography a bit, you can also place the crate inside of an exercise pen. This gives your tiny sausage a bit of freedom but still contains them when needed. But be sure the exercise pen has only vertical bars that are close enough together to contain a pup that will be under five pounds in the first few weeks or they may pull off a Houdini and escape while you’re not looking. Charlotte was able to climb the horizontal bars of her first exercise pen to greet me at the door when I returned from a trip to the grocery store!
Once your dog is allowed on the furniture, waterproof coverings are a smart investment to protect your upholstery. I like these IMPROVIA Washable Underpads for covering a sectional or couch. They come in many sizes, but the longer, narrow size works great for couch cushions.
If you decide your pup will sleep with you, consider a waterproof bedspread to save you from purchasing a new mattress if the worst happens. Or try this waterproof mattress protector from Quince, because doxies love to burrow under the covers. It is especially soft, non-crinkly and 100% organic.
Finally, to prevent muddy paw tracks on rainy days, position absorbent mats at the doors where your pup will go in and out. Thick and thirsty chenille mats can catch most of the mess before it spreads.