Here are some ways to get rid of rats in an apartment in The Sims 4:

• Clean up any food or trash that is lying around. Rats are attracted to food, so it is important to keep your apartment clean and free of any food or trash that could attract them.
• Seal up any holes or cracks in your walls or floors. Rats can get into your apartment through small holes or cracks, so it is important to seal up any openings that they could use to get in.
• Set traps. You can set traps to catch rats. There are a variety of traps available, so you can choose one that fits your needs.
• Get a pest control company to come and spray your apartment for rats. If you have a serious rat problem, you may need to get a pest control company to come and spray your apartment for rats.

Here are some additional tips to help you get rid of rats in your apartment:

• Keep your food in sealed containers. Rats are attracted to food, so it is important to keep your food in sealed containers to prevent them from getting to it.
• Take out the trash regularly. Rats are attracted to trash, so it is important to take out the trash regularly to prevent them from getting to it.
• Don’t leave food out on the counter or table. Rats are attracted to food, so it is important to never leave food out on the counter or table.
• Keep your apartment clean and free of clutter. Rats are attracted to clutter, so it is important to keep your apartment clean and free of clutter.
• Secure your trash cans. Rats can get into your trash cans, so it is important to secure them so that they cannot get into them.
• Trim back any bushes or trees that are close to your apartment. Rats can use bushes or trees to get into your apartment, so it is important to trim back any bushes or trees that are close to your apartment.
• Keep your apartment well-lit. Rats are more likely to be active in dark areas, so it is important to keep your apartment well-lit.
• Make noise. Rats are less likely to be active if there is a lot of noise, so you can try to make noise to deter them.
• Get a cat. Cats are natural predators of rats, so you can get a cat to help you get rid of rats.

I hope these tips help you get rid of rats in your apartment!