You should not feel uncomfortable about using one of them as long as you know what you're getting into. There are some things to remember:
Don't use products on parasites if there is a risk of getting sick, such as if you are in a developing country or an area that is under-developed. You should not try to diagnose parasites by just looking at them. This is because the body may not have the ability to distinguish between the parasites and harmless bacteria. Use products that are not tested for or contain ingredients such as alcohol or pesticides if you have not been told that they are harmful to your health. Don't use products that are too strong for the body's body chemistry. This means products that can easily kill or harm you, such as deet, phosphorus, or arsenic. Don't try to find out if something you are buying is good or bad for you, just know that it has been tested and may help you live longer. You can also check out a good guide on what is safe to use on a parasite by reading our parasite health page. You can use a food scale to check what you are buying, but the one we like is called the Food Scale. Read our parasite nutrition page to learn how to get enough nutrition.