Why is antibiotic resistance a public health problem? Antibiotics are called societal drugs, since antibiotic resistance can pass from bacterium to bacterium (see About antibiotic resistance), and resistant bacterial infections can pass from person to person. Thus, antibiotic use and antibiotic resistance can eventually affect an entire community.
1 To completely refinish a hardwood floorâmeaning sand it down to bare wood, then apply several coats of new finishâexpect to pay $1.50 to $4 per square foot, or $340 to $900 for a 15-by-15-foot room.  If your floor is slightly worn but otherwise in good condition, you could get by on just recoating it without sanding.
1 Recoating cost: The cost for recoating, or screening, a hardwood floor is typically in the range of $1 to $2 per square foot. 2  Complete refinishing: An extensive refinishing project, which includes sanding and application of several layers of finish, ranges from $2 to $5 per square foot. $2.50 to $5 per square foot. 2  Do-it-yourself: The cost for items needed for do-it-yourself refinishing, including a commercial sander, buffer, and finish solution, typically range from $150 to $500. 3  Timing: Hardwood floor refinishing can take two to four days, depending on the size of the room.