Do you have any intention to harm anybody while preparing rice? It is recommended that you chant Thoh three times then wait 24 hours and do it again three times.
When I used to go to see on the floor what was it, i used to see some small insect, beetle or an ant at the point on floor moving in the same direction.
The first intercourse was not planned by God and the second was planned but made too early so the first humain beings were not mature enough, that is where all the sexual problems and all society regulation come from! Many experts have shown that those who work on developing their pineal glands also help to enlarge it in a positive way.
And none of these actions carries any value for a spiritual sádhaka.
They have a spontaneous attraction for the Supreme, which non-humans do not possess.