Yes, it is a liquid. Don't use too much because the peas will eat it if you put out a pile. If they just eat a little, it will deworm them but an OD can be deadly.
I would remove the male and put it in the pen with the other 2 females and leave the broody to her eggs alone. I would also let her hatch the babies fully. I wouldn't use any ant killer in the pen. You can mix Ivomec with corn meal and let the ants eat it and it will kill them. You can put...