Thanks everyone for the suggestions. Unfortunately, I'm not able to take advantage of most of them. For instance, Dynatrap. My friend has these and loves how they've helped get rid of bugs, but I have no place to plug one in. I would love to have a screened-in porch, but can't afford. The plants are a great idea, but no place to plant. However, it might be possible to put some geraniums in pots on my porch, but I"ll need to figure out how many I would need and whether I'd have enough room. And, finally the bracelets. When I first came across those online, I thought great! But, then I read that they don't really work. The same apparently holds true for citronella candles.
I'm still wondering about the lemon eucalyptus oil and the Thermacell devices. Wondering if there are any undesirable effects from using the oil. Same with Thermacell--I not only wonder about whether those devices even work, but whether the repellent that comes out of them is safe. Right now, it looks like the safest thing to try would be the geranium plants, depending on how many I'd need. Of course, from what I understand, there are also jackets out there made out of some kind of netting (?) material I could put on, but I don't think that would feel too great in the summer.
I'll keep looking for things I can try. Again, thanks everyone for the suggestions.