# robots.txt for https://www.greenscreenchemicals.org # Updated June 30, 2026 # Goal: maximize search + AI discovery while reducing crawl waste. # Updated Aug 26 to limit bingbot User-agent: * Allow: / # Block direct PHP test/access URLs # Keep only if public URLs do not rely on visible .php URLs. Disallow: /*.php$ # Block spam redirect/query patterns Disallow: /*?URL= Disallow: /*&URL= Disallow: /*?url= Disallow: /*&url= User-agent: Bingbot Disallow: /*?URL= Disallow: /*&URL= Disallow: /*?url= Disallow: /*&url= Crawl-delay: 2 ############################ # Sitemap ############################ Sitemap: https://www.greenscreenchemicals.org/sitemap/greenscreen