620 trial and pictures.
Did a 2.8 acre trial with a new 620 Monday. 230 mounds treated. 8 mounds after 48 hours, about 12 to 15 new mounds after 5 days. Great percentage, but with the untreated field next to what we treated, it is suspect in that the gophers will move quickly into old burrows, even with dead gophers in the burrows.
No question, the huge increase of carbon monoxide delivered with the 620 makes a difference in the kill rate. 7.5 cfm per probe with a 412 compared to about 11.5 plus with the 620.
Uncategorized | admin October 15, 2009
