How can I stop the rabid sheep?

Hint 1 of 4:

For reference, the sheep are at 2C (7,11).

Hint 2 of 4:

All you need is the appropriate item.  Once you have it, you should know what
to do.

Hint 3 of 4:

Look around local pawnbroker shops to see if any of them can sell you the
right item.

Hint 4 of 4:

Specifically, go to the one in the Paterson marketplace -- 2D (8,8).  He has
a can of sheep spray.