The reigning premiers made it three from three after their 28-18 win over the NCDC Port Moresby Vipers at home in Lae yesterday.
Meanwhile, the NCDC Port Moresby Vipers are yet to register a win this season.
The current standings after round three:
Lae Snax Tigers (6), Kroton Hela Wigmen (4), PRK Mendi Muruks (4), Agmark Rabaul Gurias (4), EPG Enga Mioks (2), Bintangor Goroka Lahanis (2), Waghi Tumbe (2), NCDC Port Moresby Vipers (0).
Round four games will be played in the Highlands and Port Moresby this weekend.