I bought new pine wood doors. I stained the doors with Cherry wood stain but a haze has appeared on a lot of the areas of the doors. How can I stop this from happening?
Most likely this was caused by the moisture in the wood. The only way to stop this from happening is to allow the doors a few days to acclimate to your homes environmental conditions and choose a dry day for the staining. The same thing can happen with many clear finishes.
If this doesn't help then it could be the stain, choose a different brand, or it was applied too thick and the excess not fully wiped off before drying.