>>1304597Nagas, being part snake, tend to be particularly lazy. If you lived with one she would most likely be content to laze around INSIDE the house most of the time, so a dirty tail wouldn't be a problem so long as you regularly vacuumed.
And even when she DID get it dirty there's nothing stopping her from just taking a bath.
Plus, if you were willing to drop the necessary coin for it at least, you could also commission a clothing fabricator to sew you a cotton tail-sock with customized measurements for that of your Naga-wife's tail. Tell me that wouldn't make an awesome Christmas present one year.