Detector dog Sam helped Revenue officers find cannabis worth an estimated €94,000 hidden in a parcel at Portlaoise mail centre.
And in a separate seizure yesterday, officials found 6kgs of the illegal stimulant Khat in a package originating from Kenya.
Revenue chiefs revealed that a whopping 4.7kgs of herbal cannabis was discovered in a parcel sent from Canada, which was declared as "clothing".
Both packages were heading for addresses in Dublin city.
A Revenue spokesman said: "Investigations are on-going with a view to prosecutions.
"These seizures are part of Revenue's ongoing operations targeting drug importations.
"If businesses or members of the public have any information regarding drug smuggling, they can contact Revenue in confidence on Confidential Phone Number 1800 295 295."
