Police in Springfield, Massachusetts say a spat between building tenants about dog poop turned into something far shittier on Saturday: a less-than-neighborly double stabbing.

33-year-old Michael Valentin was arrested yesterday on two counts of armed assault with intent to murder after allegedly stabbing his 46-year-old neighbor and her 23-year-old daughter in the face, neck and back. Valentin was apparently angered by feces left by their dogs in shared spaces of the multi-family home they both rented.

From NBC New York:

Valentin called police earlier to complain that the victims' two pit bulls would defecate on the rear stairs and side yard. Police asked the landlord to resolve the code violation. The stabbing occurred about two hours later.

Valentin is scheduled to be arraigned on Monday.

[Image via Facebook/Springfield Police Dept.]