[1] Water spots, food stains, etc. [2] Allowing food to remain on table top too long, needs paraffin or wax [3] Use light sandpaper of fine steel wool on stain. Continue regular maintenance. Stain will dissipate in wood grain. [0] 
Stains
P r o b l e m
E n d C h e c k s
S p l i t s
W i n d S h a k e s
W a r p a g e
R a i l E x p a n s i o n
S t a i n s
D a m a g e
M i n e r a l S t r e a k s