The federal government has promised it is doing enough to stop foot-and-mouth disease (FMD) entering the country, as some travellers question the screening processes at Australian airports.

Not all the government's new control measures — announced last week — are in place.

Quarantine inspectors have greater powers to screen travellers in airport Biosecurity Response Zones but disinfectant mats — which kill the disease on people's shoes — are still being tested.

"Testing will look at how the mats work, where they are best located and how travellers can use them," the Department of Agriculture, Fisheries and Forestry said in a statement.

"Our biosecurity controls rely on a multi-layered approach to mitigate the risk of FMD, including passenger declaration, 100 per cent profiling of all passengers entering from Indonesia, real-time risk assessments, questioning and shoe cleaning."

But travellers said some of the new screening requirements seemed haphazard.

"There's a group of seven of us — family and my girlfriend — [and we] had to go through quarantine and we all just got let through, so she just got picked at random," tourist Harrison Byrne, who returned to Melbourne from Bali, told the ABC.

"There's not much point separating a family and a couple of them having to go line up for half an hour to go through quarantine and the rest are allowed to leave."

'It'd cripple livelihoods across the board'

Farmers said they remain worried by the outbreak, especially after the detection of viral fragments at Adelaide and Melbourne airports last week.

"What's going to happen if this gets into Australia and these animals have to be slaughtered?" Adelaide Hills cattle and sheep farmer Lyn Nitschke said.

The Nitschke family is already taking extra precautions to stop the disease reaching their property, making staff and visitors wash their shoes in chemical baths upon entering the property.

They asked the government to increase control measures.

South Australia's Shadow Agriculture Minister, Nicola Centofanti, said extra biosecurity officers should be stationed at airports to help with the screening.

"To ensure that every single person who comes off a flight from Indonesia gets their luggage individually assessed," she said.

"These biosecurity measures are the last line of defence for foot-and-mouth disease in South Australia and it is critical that we put a ruing of safety around our livestock industry and around businesses."

Rapid response ready if FMD detected

The South Australian government said it had already taken extra precautions against the disease.

"Our areas of activity for preparedness include working with farmers on enhanced surveillance to ensure early detection of disease, increased biosecurity practices at farms that prevent transmission of disease, increasing FMD diagnostic testing capability at VETLAB (the state animal health diagnostic laboratory) and planning exercises to ensure a rapid and effective response should FMD be detected in Australia," Primary Industries Minister Clare Scriven said.

Prime Minister Anthony Albanese has restated his opposition to suspending travel from Indonesia, saying it would risk Australian exports.

"If we do that, of course, then there will be a response. What we are trying to avoid is an impact by definition on our trade," Mr Albanese said told Sky News.

He said the new biosecurity protections were an appropriate response to the outbreak.