Drugs, cash and weapons were seized during a 48 hour crime crackdown in relation to Operation Target.
On Monday, two warrants were executed in Belle Vale and Toxteth where, on Sienna Close, officers spotted a man trying to throw a bag of cannabis out the window and trying to escape.
He was arrested and a later search of the property led to more of the Class B drug being found along with other drugs paraphernalia.
About £7,000 was recovered along with knives and machetes.
A man, 19, and a woman, 38, were detained on suspicion of possession with intent to supply Class B drugs, possession of a controlled drug (Class A) and possession of criminal property.
On the same day, another warrant at Poplar Court in Toxteth revealed the occupants trying to flush cannabis down the toilet.
A quantity of the drug was discovered in what police described as a "thorough search of the toilet."
Three men, aged 35, 32 and 25, were arrested and a large haul of cannabis and more than £1,000 in cash was seized.
All three were detained for possession with intent to supply drugs and possession of criminal property.
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On the same evening, police from the Matrix team stopped a boy, 17, riding an electric bike on Western Avenue, Roby.
The child was found carrying a large knife and a quantity of suspected cocaine and heroin.
He was arrested for possession with intent to supply Class A drugs and possession of an offensive weapon and taken to custody for questioning.
In another part of Operation Target, officers conducting a high visibility patrol in Stockbridge Village where a teenager was shot dead nearly three weeks ago.
Police stopped an Audi A3 on Plum Tree Close where they discovered drugs paraphernalia and suspected cocaine.
Two men, 22 and 32, who were inside the car were arrested on suspicion of possession of a controlled drug with intent to supply and also being concerned in the supply of a controlled drug.
A search of two addresses linked to the men led officers to find a large sum of money, a number of knives and a quantity of Class A drugs.
Elsewhere, two men were arrested on suspicion of affray, assault and possession of an offensive weapon following an incident on St Johns Road, Huyton, on Monday.
A connected search of a property on Hatfield Gardens uncovered a baseball bat and a machete.
And on Melling Road, Aintree, a 16-year-old boy was stopped as he tried to run away from police and disposed of his bag in the process.
Inside was a lock knife and cannabis after he was found attempting to hide in a garden.
The boy was arrested on suspicion of theft of a pedal cycle, possession of an offensive weapon and possession of a controlled drug and taken to custody.
And a cannabis farm was uncovered on Crofton Road, Rockferry, on Tuesday, after police noticed the sound of fans and a strong smell of the drug.
The occupier was confronted who admitted having the Class B farm inside, leading to his arrest.
A search of the property revealed the cannabis growing operation in the front bedroom and loft.
Superintendent Jenn Wilson, of Merseyside Police, said: "As the Christmas period draws closer, we want to ensure our friends, family, colleagues and neighbours can enjoy the festive period.
"Therefore, we are determined as ever to take those involved in crime off our streets, seize dangerous weapons, destroy illegal substances and give our law-abiding citizens the justice they deserve.
"As part of this, Operation Target teams will proactively be patrolling various areas day and night in our fight against crime, gangs and serious violence.
“I hope the arrests made last night, into this morning and over the course of this month show the public that we are doing everything we can to keep them safe.
"These arrests provide a glimpse into the crime we deal with on a daily basis and we hope to empower our communities to report crime and allow us to investigate."
