Like most of the previous posters, I'd be more concerned about violence, drugs, and the possibility of physical injury.
Judging a mother based on her behind-locked-doors sexual activities (including money-making endeavors) is really lame. How in the world does that affect her way to care for her children? Were all children in the OP's neighborhood conceived via missionary position through a hole in the sheet?
Thanks. Great laugh there.
Irrational, violent, or agressive parents would worry me 10xs more than dildos, or talk thereof. The pp that mentioned parents fighting with a knife while her DD called from a closet would be a big deal breaker.
Sex Offenders would be #1,2 and 3 on my list, but there is no way to check here. (Wish there was).
Guns, though here that would be totally illegal, not to mention just odd.
Bonfires would not bother me, my kids have bonfires at their school probably once a week in good weather. Bonfires are also at the local parks...