There are several natural and DIY remedies that can repel cockroaches. Here are some of them:

1. Spices: Cockroaches cant stand the smell of certain spices, so you can try sprinkling cayenne, garlic, onion powder, or a mixture of these spices around your home to ward off the roaches.

2. Tea tree oil: This essential oil is known for its ability to fend off bugs of all kinds. You can make a DIY mixture at home by combining 1/4 cup of tea tree oil with 2 cups of water in a spray bottle and spraying it throughout your home.

3. Borax and sugar: Combining borax and sugar is a very effective combination that kills off roaches. The right combination is about three parts borax to one part sugar. Once you combine the two ingredients, sprinkle it around your home to keep the roaches at bay.

4. Diatomaceous Earth (DE): DE is a natural repellent composed of fossilized algae. When roaches come into contact with it, it dehydrates their exoskeletons. You can either sprinkle it or use it as bait in concentrated areas where you are experiencing roach issues.

5. Cleanliness: Cockroaches are attracted to food and water sources, so keeping your home clean and dry is an effective way to repel them. Here are some tips:

• Keep all of your dining to certain rooms to stop the spread of crumbs and debris.
• Keep cabinets, appliances, and other storage areas clean.
• Check your water sources for leaks and keep pet water dishes empty overnight.

6. Seal away hiding spots: Cracks, holes, and crevices are perfect hiding spots for roaches. Be sure to check around your household items, appliances, and inside storage. Seal any openings you find to prevent roaches from entering.

7. Plants: Certain plants can also repel roaches. Some examples include rosemary, bay leaf, mint, lavender, catnip, and lemongrass. You can place these plants around your home to keep roaches at bay.

Its important to note that while these remedies can be effective, they may not completely eliminate a cockroach infestation. If you have a severe infestation, its best to call a professional exterminator.