i've used eucalypt for mulch before with no problems, can't say about camphor laurels but? maybe if you leave it in a pile to break down some first this may allow for the active ingredient to dissipate?

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garden express

len

The only thing that you may have to be careful of is any branch fragments taking root. This is a problem of Willow derived mulch if it is in a wet area. Not sure about Camphor Laurel but it is an issue to consider.