Gardening accessory to hit piece of avian waste (4,6)

I believe the answer is:
slug pellet
'gardening accessory' is the definition.
I don't know anything about this answer so I cannot judge whether it can be defined by this definition.
'hit piece of avian waste' is the wordplay.
I cannot really see how this works, but
'hit' could be 'slug' (slugging is a kind of hitting) and 'slug' is found within the answer.
'piece' could be 'pellet' (I have seen 'Piece of shot' mean 'pellet' so perhaps 'piece' could also mean 'pellet') and 'pellet' is located in the answer.
This accounts for all the letters.
This explanation may well be incorrect...
'to' acts as a link.
Can you help me to learn more?
(Another definition for slug pellet that I've seen is " form of pest control".)