I notice some take a bite out of the host and palm the rest and walk out of the church with the Eucharist in hand.
Is there no way you can prevent this? Can't you insist that they consume the host before they step away? What an abominable practice!
Sure there is..Teach the Parishioners from the Pulpit that they must consume the Host when they receive it at Holy Communion. It is not to be removed from the Church in one's pocket or purse ..To do so is a terrible abomination and desecration of the sacred Host and is a violation of Canon Law #935 which reads: " Can. 935 It is not lawful for anyone to keep the blessed Eucharist in personal custody or to carry it around, unless there is an urgent pastoral need and the prescriptions of the diocesan Bishop are observed. "...That means one cannot carry it on them, or take it to their home or to another place...What is so difficult about teaching this in RCIA, or at Mass, or in a Church weekly bulletin?....
Absolutely nothing! However, in those parishes where the pastor is unwilling to address the situation from the pulpit, shouldn't the onus now fall on the EMHC who has been commissioned to perform this service?