Products recalled after listeria found during routine testing at the Kalleske's Meat's plant in Adelaide.
Today's standard microbial tests are a hit and miss method of spotting contaminations.
SafePro can be sprayed onto high-risk foods at the time of manufacture to inhibit the growth of listeria.
Pregnant women and people with weakened immune system should be extra vigilant.
Veggie recall shows need for Country of Origin labels, union says.