What pour is safe for pregnant cows?

[janekng]

What fly pour on or other fly product is a safe for pregnant cows? I searched and came up with nothing, please help.

 

[dun]

I'm sure there are others, but we've used BOSS for years on calves, bred beef cows and lactating beef cows with no problems.

 

[JW IN VA]

Never had any problems with synergised De-Lice or its generic

 

[ThePriceRanch]

We've generally applied pour on when cows were 3-6mo pregnant. Used a variety such as dectomax, ivermectin etc. and never had any problems. Note we usually were shipping off calves at the same time so no more nursing
Just have 6 yrs experience. In California central coast