The loss of 46 homes in Western Australia's latest catastrophic bushfire is another sign some homeowners are not prepared for the worst, the state's emergency services minister says.
Four people were unaccounted on Monday afternoon, after the chaotic blaze swept through Parkerville, Stoneville and Mount Helena on Sunday.
WA Emergency Services Minister Joe Francis admitted he was frustrated that the fire preparation message was not getting through.
"Absolutely I am frustrated - everyone must have been sick of me saying `are you ready?'" Mr Francis said.
"A lot of homeowners have done that, but some people don't do the right thing.
"What do you suggest - I force people to chop down trees? You have got to find a balance between regulation and responsibility."
WA authorities spent hundreds of thousands of dollars to promote their 'Are You Ready?' message this year, using VC winner Ben Roberts-Smith as the figurehead.
"It is disappointing when you hear stories of people at 1pm in the afternoon on the roof with blower vacs, blowing out the gutters," Mr Francis said.
Fire Commissioner Wayne Gregson said there were homes throughout the state that were "indefensible".
"Fuel load is the only variable in a fire that man has the potential to control, so as I have underscored time and again, the more we prepare the less likely there will be catastrophic consequences," he said.
"There are homes throughout WA that are, in the wrong set of circumstances, indefensible.
"So an on-team leader on the ground will make an assessment how much risk he will expose his defensive team to."
Despite the loss of property, Commissioner Gregson had nothing but praise for the firefighters who battled the blaze.
"I just can't say how proud of how I am with everyone who responded - but there is only so much you can do in the face of Mother Nature," he said.
"(For) some volunteers yesterday, this was their fourth job - we have got a lot of tired people.
"And a lot of them will be feeling very deflated because despite their best endeavours we have lost a number of houses, and they feel that quite personally.
"But for their actions many, many more people would be affected by this fire."