@givenup @IsraelDelendaEst @cajunaesthetic @gh0st1984 @honkwerx @Bulletsandbourbon @KiKi88 @The_Almighty_Kek @idea_enjoyer @dnc Citric acid my dude. You probably have some from canning. Dilutes to vinegar equivalent super easily at like 1 tsp per 500 ml water. Soak sprayer for a few minutes, hit with toothbrush, repeat if necessary. It'll eat rubber, so hit your o-rings with some oil or grease first.