Can I know if lemons are safe to eat whole (peel and all)?
this may be too simple.  But I would think you could ask the owner of the website what chemicals the farmers use. Especially if you are concerned about particular ones.  I haven't seen a web store without a &quot;Contact us:&quot; link
I guess the owners could lie to you, but without knowing a lot about chemical tests, that's the best I've got.