The whey powder has been used in 870 tonnes of product, including infant formula and in a feed for calves. It can also be used in protein drinks for bodybuilders and as a dietary supplement.
Mr Rogers, whose Turakina farm supplies Fonterra, said threats to the health of babies had to be taken seriously.
Recalling and destroying all the affected products would be a huge task, but it was the right thing to do.
He said the dairy industry needed the latest problem "like a hole in the head".
"Whenever payouts go up, there's always something that happens to stuff it up."
Previous Fonterra problems have involved melamine intentionally added to milk in China, the nitrogen inhibitor DCD found in milk and concerns about the effect of oil drilling waste on dairy grazing land.
However, Mr Rogers said the contamination issue was nothing like those - not even a scandal.
"No one has been diagnosed with botulism, and it's more than likely nobody will be."
Whanganui District Health Board spokeswoman Sue Campion said the maternity unit had not received any calls from concerned parents so far.
Plunket general manager of service development Brenda Hynes said parents should follow Ministry of Primary Industries advice which was to avoid feeding children Nutricia Karicare stage 1 for babies and stage 2 for children from six months old, regardless of their batch number. No Fonterra-branded products on sale in New Zealand are at risk, but the two Nutricia infant formulas are being withdrawn. Ms Hynes told the Chronicle calls to Plunketline had increased "dramatically" since news broke on Saturday.
Most inquiries were from parents who wanted to check if the formula they were using was affected.
If parents had health concerns about their child they should call Healthline.
China and Russia reacted quickly by banning some or all Fonterra products, and other countries were likely to do the same.
CONTACT NUMBERS
For health concerns or further information on use of infant formula contact:
Plunketline: 0800 933 922
Healthline: 0800 611 116
Ministry for Primary Industry updates: http://www.mpi.govt.nz/home
If you are concerned about your child's health, contact your GP.