Avicakes don't, and the flavored nutriberries that come in the plastic bags don't. Last time I checked the original nutriberries in the plastic canisters did have ethoxyquin.

I have the big plastic bucket of the Macaw-Cockatoo Nutriberries and there's no E. States they are naturally preserved.

Over a year ago when I first heard about Ethoxyquin I called Lafeber's and their Nutriberries awhile ago did contain that. When I called there were in the process of switching to a natural preservative and at the time only the Gourmet Nutriberries were switched over but they were working on the rest. I do feed the Gourmet Nutriberries and the Avicakes and there is no Ethoxyquin now. There is a large sticker on the front as well that states they are naturally preserved.