Mr Smith said officers moved back and called a specialist unit.
When spoken to, McIntyre claimed he making an energy drink he had been producing for years from a recipe given to him.
The pots were part of extracting pseudoephedrine from pharmacy substances such as cold and flu medicines, Mr Smith told the jury.
Police also recovered buckets, glassware and equipment used to manufacture the drug from sheds at the property.
Mr Smith said McIntyre knew the items recovered by police were used to produce the drug, although the law did not require McIntyre to know the chemical formula for making methamphetamine.
Earlier Justice Peter Woodhouse urged the jury to keep an open mind and to reach their decision solely on the evidence before the court.
The trial is set down for a week.