Residents are down in the dumps as they claim beachgoers have been leaving "human waste" in their gardens and jet-skiers have been seen "splashing about under the influence of alcohol".
It comes as a beachside café submitted a bid to serve alcohol on and off its premises near Machroes Beach, in Abersoch, Gwynedd.
A local man said that with public toilets located several hundred meters from Mickey's Beach Café, many visitors are using nearby bin areas and the garden where children play as makeshift toilets.
Despite public objections, Cyngor Gwynedd's central licensing sub-committee approved the café's application on Wednesday, subject to conditions.
