Home remedies or lotion that I can apply to my skin to prevent insect bites?

I keep getting these 2-3 inch welts all over my body from who knows what insect.

So are there are home remedies or over the counter lotion that I can apply to my skin so I don’t get bitten while I sleep?

"Off" bug repellent is awesome…the deep woods off is best…also if u like garlic, eat lots of it…bugs hate it…dont use the avon stuff…it attracts them