hand wash after coming home. wearing mask (though we never took him out since lock down started). two time brush.,Make him understand that he can slip on water (both in & out of washroom) so wear slippers.,WE CAUTION HIM WHATS MAY HIT HIM OR HE MAY GET INJURED LIKE NOT STANDING ON CHAIR. STAY AWAY FROM DOGS, INSECTS.Danger of touching hot things/fire.,have right locks and grills in DOOR & windows.,he see educatory and learning content on TV/social media.