He recently gave Mandurah Coastal Times some insight into drug-related issues affecting the community.
Sgt Trimble said there are various motivators behind criminal activity.
"Some people are motivated to commit offences in support of an addiction to illicit and/or prescription drugs," he said.
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READ NOW"Some choose to take drugs such as methamphetamine, more commonly known as crystal meth, ice or speed.
"Initially they just want to see what it's like but soon realise they can't stop."
Sgt Trimble said most of these people had never committed illegal activities before they tried drugs.
"This supports their addiction, which they finance through a cycle of committing offences including robberies, burglaries, stealing and other offences," he said.
Sgt Trimble said synthetic drugs were falsely portrayed as legal and harmless.
"With synthetic drugs come a long list of side-effects. These effects are similar to those of methyl amphetamine and include hypertension, extreme paranoia and terrors, hallucinations and irritability, seizures, deficits in memory, strokes and a coma state," he said.
He said many people end up on antipsychotics for years after trying the drug.
Rehabilitation can be the only option for many people wanting to quit drugs.
Sgt Trimble said people could get professional help from services like the South Metropolitan Community Drug Service.
"Families of people who are affected by drug addiction are also able to get advice from this service," he said.
Those wanting to report and stop those who are selling these types of drugs can do so by calling Crime Stoppers on 1800 333 000.
This includes retailers selling synthetic drugs under the banner of a natural organic substance.