Trash problem

Ok I have never had this problem before, and it seems simple, but whatever i
do it just doesn't fix! Garbage! In my capital i have a landfill site, and
it has reached its capacity. The advisor reminds me to pay another city to
'take trash for cash' and i think i should, but this is so perplexing....
when i zone more landfill, it is as if it doesn't exist - the capacity
doesn't increase and in turn the garbage problem is not resolved. I have put
in the recycling building to reduce garbage, but still the garbage problem
remains.

help?

>> help?

It is connected to the city right? And you have set up the export
contract in the finance section.

>A waste-to-energy power plant is another option, if your city and
>revenue is big enough to support it....it will burn the garbage and turn
>it into electricity, with a pollution cost.

Or put it in a neighbouring city you don't care about. They are not
that expensive when you consider the massive upkeep on landfills.