I am worried, per se. I thought about it at first and after discussion
with the chemical company involved, it seemed the worst was over. The
dangerous part to these chemicals are the volatiles and they come off
immediately. What is left is the pigmentation. So I was relieved to
think that the worst came off immediately and just left a kind of
tattoo if you will.

I am not so sure how safe the orange is, I forget. But if I use a
clean, white rag to see if anything at all comes off, as the chemical
company suggested originally, that might be a way to go. The orange
cleaners or citrus cleaners appear to be safer but it's been a while
since I actually read the MSDS sheets from these cleaners.

What apparently happened is that this particular blacktop chemical just
loves the paws of cats and went deep into the skin. Sometimes this junk
works much better than it was designed off. Of course it's supposed to
work into the asphalt but it has affinities for things you would not
imagine.

Now for me as a human, the blacktop came off immediately with ordinary
alcohol. But not with the cat in question.

It's not on any fur. And she does not seem to notice so there's not any
problem with her cleaning her toes or sucking them or anything like
that. I just feel so stupid since she used to have the prettiest pink
feet, being an almost white coat. Now her feet are 1/2 pink and 1/2
blacktopped. But just on the bottoms.