fenbendazole crumble vs rooster booster wormer

[jk47]

which one should I use. the rooster booster is approved for lay hens
and I cant tell if the fenbendazole is approved for lay hens or what the withdrawal is

 

[dawg53]

which one should I use. the rooster booster is approved for lay hens
and I cant tell if the fenbendazole is approved for lay hens or what the withdrawal is

Rooster Booster is given for 5 days. It is an effective wormer, but how do you know your birds have eaten enough of it to be effective, especially birds that are lower in the pecking order? It has a 3 day slaughter withdrawal and no egg withdrawal.
Fenbendazole has been proven a safe wormer in poultry. I use Safeguard liquid goat wormer and administer it orally to each chicken. That way I know each chicken got properly wormed, no guesswork about it. Normally there's a 14 day withdrawal period after using fenbendazole.
http://www.ncbi.nlm.nih.gov/pubmed/3814008