Can I request that he get rid of these dogs and request he have supervised visits?

My ex husband was ordered to pay child support and keep my son on his insurance. He has not upheld either of these and has been in contempt of court for over a year. He lived out of town until 2 months ago and now gets our son every other weekend. Our son is 2 and has emotional breakdowns every time my ex shows up to pick him up. He comes home withdrawn and stuttering horrible, and having nightmares. I know my ex is not a threat or harm to our son but his 2 pitbulls living indoors with him are. My concern is not the money. If it was up to me, I'd have him sign his rights away but I know that isn't what’s best for our son. I was told there was no way I could fight for full custody and win in Louisiana. Is there anything that I could do to make this easier on our child and have fair conditions for all?