NB 6th July 2020. This post below was written in 2016 and is now out of date. There seem to be additional products by Ecover which contain isothiazolinone preservatives, so check websites and labelling carefully. In the US, the dishwasher liquid is no longer safe, for example.
Most Ecover household cleaning products are free from isothiazolinones – but not all. Here are the ones to avoid if you are allergic.
Ingredients for all Ecover products are provided on their site, together with their function. Alternative preservatives used in the safe products, which are isothiazolinone-free, include benzyl alcohol, phenoxyethanol and sorbic acid.
As only the above named products are unsafe for those with MI allergy, it means all the fabric softeners and the non-laundry products are isothiazolinone-free.
Again, this means all the fabric softeners and non-laundry products (wipes aside) are safe.