|
|
VINEGAR must works.9 K9 A/ n! l- {( l
$ c8 a: C& r, N- b
But you need some more conditions:8 n) `- o! M- b: u/ }0 T
1 ^- Q1 O0 a) O1. the solution of the vinegar must be at least 5-6%, so it's better you buy a vinegar acid to add appropriate water.
+ v% j, c' ]) n/ x6 Z- G) @% U) [2 K% T" ^) g
2. the temperature of the vinegar should be around 40-50 degree C.
7 Y+ p3 v$ q+ q6 Q a2 C9 }2 q2 w% ?0 R# s6 e9 C) c
3. At least 1hr per day for around 1 or 2 monthes, you will be OK.
1 H; m' [& p7 A
& R. I4 v) l- P- o5 P3 T4 sgood luck. |
|