Hi everyone - I am new to the site and an absolute Boxer lover! We just adopted our sixth boxer - a 6 mos. old female we named Lucy about a month ago from the local Boxer rescue. She had kennel cough, mange, and diarrhea. We have managed to eliminate the first two but the last one is still lingering. Vet has taken two fecal samples, said he saw some unidentifiable protozoa and put her on Metronidazole 250mg for a week - didn't work...So, he was going to order a diagnostic kit from Texas A&M to see if they could give some guidance. Well, two weeks went by and no kit. In the meantime, my pet sitter asked if he had checked for Giardia and I said that I wasn't sure so when I took her in for her last and final scraping, I asked him to check for this and low and behold it was positive (I was kind of ticked that he didn't check for this in the beginning). He put her on Metro 500mgs this time around. We are on day 4 and still no help. I contacted another Vet and they recommended the same course of treatment but to add some immodium and a bland diet. I am giving her some plain yogurt too to add back in the good bacteria. Does anyone have any suggestions? Also, does anyone know a home remedy to disinfect the backyard without killing all the grass? Thanks!!!!