Sex toys are mostly unregulated -- a real problem since they touch your most delicate parts. Phthalates, chemicals commonly added to plastics to make them flexible and resilient, are what you want to stay away from because they’ve been found to interfere with the endocrine system, and may be linked with cancer. Weiss recommends “the sniff test” to make sure you don’t get any leachable toxins near your goods. “If it has new-car smell, put it down,” she says. That’s the smell of chemicals “off gassing” into the air. “You don’t want that toy anywhere near your body.” Look for toys made from medical-grade silicon. Go for rechargeable over wasteful batteries, and if you have an older sex toy that is past its prime, check out SexToyRecycling.com.