I use an engraving tool. Scratches a line and doesn't come off. Works on
plastic and glass carboys. and primaries.
I would not recommend this for the kids scrapes and booboo's, though.

DAve

http://www.homedepot.com/prel80/HDUS...engraving_tool

gene wrote:
> And you don't even have to get hurt to us it. Amaaaazing lol
>
> spud wrote:
>
>> Joe:
>>
>> I know what tape your referring too. Use it to patch the kids scrapes
>> and booboo's. Waterproof and won't come off! Great tip!
>>
>> Thanks
>> Steve noobie
>> Oregon
>>
>>
>> "Joe Sallustio" > wrote:
>>
>>> You could reverse your idea and just apply tape to full carboys and as
>>> bottled mark them off. I would use medical cloth tape, it will never
>>> come off or dry out if you pick the right one.
>>>
>>> Joe