On Sat, 15 May 2010 03:45:26 GMT, notbob wrote:

On 2010-05-13, wrote:

NOT acetone!!!.

Why NOT acetone?

Acetone is very good for removing perm marker. Specially from
med-high density polyethylene, which many outdoor items tend to be.

The OP doesn't say what kind of plastic it is, but polyethylene is
what milk jugs and Rubbermaid trash cans are made from. Do a test
spot, first. Acetone can be purchased in small cans like paint
thinner at most hardware stores.

nb
IF it's polyethelene he's OK. If it's ABS he's toast - and if it's
anything else he's gambling.