Made with Diphacinone , a multiple feed anticoagulant that kills rodents in 4-6 days. Place Pacs Protect Bait & Fit in Tight Areas. Pellets are an Excellent Choice for Burrow Baiting. Economical choice, good for light to moderate infestations. Proven bait acceptance and performance. Place Pacs keep bait fresh and protect the pellets from dirt, dust and moisture. 22 Place Pacs per Pail.