Allow the wood to dry completely, sand the piece down to bare wood, and apply a coat or two of stain, wiping off any excess. If you applied the stain correctly, and it still remained tacky, it could be due to rainy weather or high humidity. Give it a few more days to see if it improves.
http://www.todayshomeowner.com/how-to-solve-problem-of-wood-stain-not-drying/
A: Start by letting the stain dry for two days to see if it disappears on its own. If not, try several different methods for removing the stain from the wood floor. Cover the stain with a dry cotton cloth and rub with a hot iron (set to no steam) for two to three seconds. Or, use very fine steel wool pad that has been thoroughly soaked in lemon oil, which acts as a lubricant and prevents scratching.
http://www.bhg.com/homekeeping/house-cleaning/surface/how-to-remove-stains-from-wood-floors/
If the wood is very dense and non absorbent you may find a thinner ratio is required. Possibly 1 part Pure Tung Oil to 2 parts thinner. If it is an old floor and absorbing a lot of oil on the second day, a 2 part oil to 1 part thinner will work better.
https://www.realmilkpaint.com/help/tutorials/how-to-finish-a-floor-pure-tung-oil/
Drying Times. When you stain and seal a hardwood floor, the stain must be completely dry before adding the final coats of polyurethane. Drying times are influenced not only by the brand of stain but also by the temperature, humidity and the air circulation in the room. While you can apply stain at temperatures between 50 and 90 degrees Fahrenheit, the ideal temperature 70 to 75 degrees. Cooler temperatures may slow the drying time by several hours.
http://homeguides.sfgate.com/long-wait-after-staining-floor-before-using-water-based-polyurethane-81803.html
Day 1. All coats of Pure Tung Oil should be cut 1 to 1 with thinner. Thinner can be mineral spirits (paint thinner), citrus solvent (all natural thinner), odorless mineral spirits or turpentine. I prefer not to use Naphtha, as it seems to dry too fast.
https://www.realmilkpaint.com/help/tutorials/how-to-finish-a-floor-pure-tung-oil/
After two days, the Minwax stain and seal was still tacky. I realize I made the mistake of not wiping down after applying the stuff. I took the advice above of applying another coat and wiping down and it worked! This time, after one night with the fan blowing, it was dry to the touch.
http://www.todayshomeowner.com/how-to-solve-problem-of-wood-stain-not-drying/
To remove excess oil stain from wood, simply apply another coat of stain, allow it to soak in for a few minutes, then wipe it off. Any excess stain will redissolve and come off, leaving only the stain that penetrated into the wood.
http://www.todayshomeowner.com/how-to-solve-problem-of-wood-stain-not-drying/
A: Nongreasy items such as food and nail polish should come off with dish detergent mixed into warm water and rubbed onto the spot with a soft cloth. Greasy stains should come up with a small amount of ammonia mixed with cold water and applied with a soft cloth. Learn the secrets to cleaning hardwood floors.
http://www.bhg.com/homekeeping/house-cleaning/surface/how-to-remove-stains-from-wood-floors/
Your can use a brush, paint roller, finish pad or apply the oil with a sponge mop wrapped with old nylon stockings. The nylon stops the mop from tearing upon the floor. On floors, start at one corner and work your way to the other side with a liberal application of the one to one mix.
https://www.realmilkpaint.com/help/tutorials/how-to-finish-a-floor-pure-tung-oil/
, I have owned and maintained several homes with hardwood floors. After staining hardwood floors it is necessary to coat them with a polyurethane finish (glossy, matte or semi-gloss finish as preferred) and wait 2 days until it is completely dry before walking on the floor. If you have air conditioning in the room, use it to speed the dry time.
https://www.quora.com/How-long-after-re-staining-hardwood-floors-should-one-wait-before-occupying-the-space
how to dry stain on hardwood floors
 To dry stain on hardwood floors cover the stain with a dry cotton cloth and rub with a hot iron for two to three seconds or you can use very fine steel wool pad that has been thoroughly soaked in lemon oil, which acts as a lubricant and prevents scratching.