If it is, indeed, eggs from an insect, you could always put a few drops of tea tree essential oil in the rinse cycle. It's a smell insects tend not to like, it's all natural, and it won't hurt the laundry. It's strong, though, so I wouldn't use any more then 2 drops at first to see how that works. Nature's Sunshine is the brand I use, here's a write up about it.
http://www.naturessunshine.com/us/pr...?stocknum=1777

Good luck!