Cheap fly spray from Bunnings as they are competing with Mitre 10 who have Expra Fly Spray 350ml for $2.99 as part of their Cheap A$ Deals. Im guessing the promo for both ends Sunday
Mitre 10 $2.99 fly spray - https://www.mitre10.co.nz/shop/expra-fly-spray/p/221687
Normal RRP on power pass is $4.44