Yeah I agree I wouldnt wash my vegies with detergent YUK I do wash with water but I feel that detergent would kinda defeat the purpose.

um I think as a general rule make sure its fresh and or piping hot, avoid processed meats and soft cheeses, etc the same as what Flea said,

if I eat while I am out shopping or something it is usually a pastie or something like that from a bakery I am not much of a sandwich girl so dont really have that prob hehehe.

I think it can get to much if you follow all the so called rules just do the best you can and avoid the key foods Flea sugested and you will be fine.