I had a problem with bunnies too so I got this and put up a short 3-strand electric fence. It was super easy to do and not very expensive, and there is a solar powered option if you don't want the bother of occasionally recharging the battery. Has worked the last 2 years and kept the raccoons out of our corn too! I've been thinking of putting up a second one around the chicken coops because we have some irresponsible neighbors that keep losing track of their dogs.
https://www.amazon.com/Zareba-EDC5M...B0079GH6K0&psc=1&ref_=pd_basp_m_rpt_ba_s_6_sc
https://www.amazon.com/Zareba-EDC5M...B0079GH6K0&psc=1&ref_=pd_basp_m_rpt_ba_s_6_sc