All the people in the world, regardless of culture or religion, are within the reach of the Holy Spirit. The Holy Spirit constantly roams among all people to help them to find God.
True evangelizers for Jesus Christ and God bring the most souls to the Lord by pausing and recognizing where the Holy Spirit is at work, even in, for example, an animistic and paganistic ethnic or tribal culture.
For example, many Christians might be appalled when they first encounter sacrifice of animals or goods toward good spirits or against evil spirits, such as in Africa. They are advised to pause and not panic or overreact, but rather recognize that the first step is the desire in the person to avoid evil and solicit the good.
The desire to sacrifice to God, even if it manifests in a primitive way in areas where the Abrahamic faiths have not taken full root and so the people still have a highly paganistic worldview and sacrifice to "spirits, is a positive charism of the person. It shows that the person believes in a higher power, acknowledges there is evil in the world, and has the correct instinct to perform sacrifice. God taught the first man Adam and the priests and prophets onward about the need to sacrifice to God. It is not because God needs the chicken. It is because it is for human's best own good that people remember that they are created by God and that all they are given is from God, and so they should sacrifice a portion of what they have "back" to God. So even people who have not heard the word of God through the Old Testament, or the Gospel, do resonate with the part of the Holy Spirit that teaches humility and understanding of God through sacrifice.
This is why the Catholic Church has corrected retained the Sacrifice of the Mass. Jesus Christ did not eliminate the need to sacrifice to God when he replaced the Old Covenant with the New Covenant. Rather, through his personal sacrifice he gave people salvation, but also the gift of sacrificing to God in the bloodless Communion of the Holy Eucharist. People may not understand what they are doing in the Mass and why (blame poor faith formation and less understanding of what God taught prior to Jesus Christ), but people who attend a Catholic Mass are sacrificing to God. But instead of bringing goods, livestock, or money for the sacrifice, they are offering up what Jesus Christ instructed them to do, his body and blood in the the transmutation of the host and wine.
Rather than confront animistic and pagan sacrifice "head on" as being "wrong," I would advise Catholics to recognize that they have an answer to the legitimate need of people to perform and offer up sacrifice. Explaining that the Jewish people and the father of all people, Adam and his descendants, learned how to sacrifice to God, and then how Jesus Christ provided sacrifice for everyone, rich or poor, through the Mass is a wonderful bridge to people that you are witnessing to. I'm personally much less alarmed and concerned about people who understand the need to sacrifice to God, though they may do it in a pagan way and to multiple or diffuse "spirits" than I am by people who don't think they owe God one thin dime!