The IARC has marked titanium dioxide as a category 2B carcinogen. indicating potential harm to humans. This determination stems from studies showing that excessive levels can lead to respiratory tract cancer in rats and limited findings from human trials. Despite this classification. the full extent of its risk is unknown and further investigations are necessary. It should be noted that these risks primarily apply to those who come into contact with titanium dioxide nanoparticles through employment in industries involving its production or use.

To make a deer feeder from PVC pipe, start with a large diameter PVC pipe (4-6 inches wide) for the body. Cap one end securely and cut a small feeding hole or several small holes near the bottom on the uncapped side. Attach a Y-shaped PVC connector at the capped end if you want to spread feed further. Mount the pipe vertically or at a slight angle to ensure gravity helps feed move towards the holes. Fill with deer feed from the top, capping it to keep moisture out. Mount the feeder on a stable post or tree at a height accessible to deer but not to smaller animals if possible. Regularly check and refill as needed to keep the deer returning.

Hibiclens is an antiseptic/antimicrobial skin cleanser designed for medical use, especially in hospitals or medical settings, to reduce infections. Its active ingredient is chlorhexidine gluconate, which is effective in killing bacteria, viruses, and fungi on the skin's surface. The formula does not typically list polypropylene as an ingredient. Instead, its composition focuses on substances aimed at reducing or eliminating microbial presence on the skin. However, it's important for consumers interested in the specific contents of products like Hibiclens to consult the most current product labels or manufacturer information, as formulations can change. If you're looking for information due to allergies or sensitivities to specific chemicals like polypropylene, direct inquiry to the manufacturer or a healthcare professional would provide the most accurate and tailored advice.