Lynnsinger209 If you can, before you go to build mode, move the household out. Sell the furniture. Then enter the lot in build mode from the map. Check to see if the babies are still there. They should be gone and show up in Manage Households in their household. If by chance, the household has more than 6 members, causing one or both of the babies to be left behind on the move, do 2 partial moves and combine them again later.
If the babies don't belong to the household, you can try saving the lot to your library then, replacing the lot with the copies as that should cause the babies to disappear.
Hope this helps.