I'd so like to know what it is that's different about "leakers".
It's embarrassing!
lol - we know kitty strives for perfection!!!!
a tip maybe worth considering, and i don't know if it is feasible for sweden!
my mother's friend STILL loves brut - yes, there are people like that - which is now bottled in plastic. whenever he runs low and i have to send replacements i use regular priority, not flat rate, where i can use a large box and insulate all 6 sides with styrofoam.
i usually do this for the xmas or birthday package and 5 pounds run about 40 bucks to germany with regular priority, which is insurable and trackable. i don't know how this compares with sweden.
this would only work for somebody with a large order that might have to be divided into 3 small flate rate boxes.