Clothes wash still smell pee

[Hermitess]

Try using an enzymatic cleaner like odoban or nature's miracle pet odor cleaner. The enzymes are specifically to break down organic residues like urine. These two products are available in the us, if you aren't located here, you'll have to find an enzymatic cleaner in your area.

[WarpathEQ]

sounds like...

Step 1 = potty training. Pee blankets?
Step 2 = Don't put things that have been peed on into the washing machine, there is a purpose to the utility sink.