How to clean the inside of a bottle<br>Fill your bottle less than ¼ full with gravel or rice. If you choose rice, use raw, uncooked rice. If you choose gravel, choose a size in between sand and pea gravel.
You can clean your bottle with gravel smaller than a golf ball.
This is true, gravel between sand and pea gravel is smaller than a golf ball.
( z1 possible :ARG1 ( z2 clean :ARG0 ( z3 you ) :ARG1 ( z4 bottle :poss z3 ) :ARG2 ( z5 gravel :ARG1-of ( z6 have-degree :ARG2 ( z7 small ) :ARG3 ( z8 more ) :ARG4 ( z9 ball :mod ( z10 golf ) ) ) ) ) )