I suppose the rapist could still palm an eyedropper and aim it into the straw, but this has got to be a lot more difficult than dropping a pinch of powder over an open cup. Doable, but difficult. Drops on the lid would be suspicious if he misses. Also, thin straws would make this even more difficult.
I suppose the rapist could still palm an eyedropper and aim it into the straw, but this has got to be a lot more difficult than dropping a pinch of powder over an open cup. Doable, but difficult. Drops on the lid would be suspicious if he misses. Also, thin straws would make this even more difficult.
You likely want straws that are bend.