No, I don't remember any mention of their lower nastiness on the packaging. It would be a bit of a marketing challenge to make much of it I expect. "NiMH batteries, not as environmentally unfriendly as the others" doesn't really cut it. I tried googling for toxic NiMH and the top 2 hits were:
I've never been too keen on cordless mice myself. I use the mouseless mouse that is built into my laptop. The cordless mouse that we had for our family desktop computer seemed to cause a fair bit of grief by not working just when people most wanted it to work (like shoelaces).
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http://www.buchmann.ca/Article16-Page1.asp
http://michaelbluejay.com/batteries/
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Hmm, will remember to check next time I need batteries.
Meanwhile my cordless mouse is not bringing me as much joy now I know it's TOXIC.
"NiMH batteries, not as environmentally unfriendly as the others"
Hee!
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