My Sim only had one gnome reject the cake, they repeared in the lounge around the TV and broke it. From 2 to 5 my sim appeased them with the flame and they took it out of her by striking her with an electric shock. The gnomes multiplied, my sim ignored the! But they kept multiplying. My sim got rid of them by kicking them. She had to follow them as after the kick the other gnomes moved round the house.
My sim got rid of them and found cool items in the scavenging. She then disposed of them in the bin.
No more gnomes appeared, but you have to get rid of them in one go, as they multiply.
