When Dooley shows up to say "You got ants" he magically appears as he wasn't in the crowd in the previous shot.
When Dale is arguing with Hank about the fire ants attack method his pesticide tank disappears, then reappears gray instead of orange.
When Dale raises his hat up, he has a full head of hair. A receding hairline to be exact.
There is no way Bobby would have been able to say his line with his mouth open and sugar pouring out.
For a man who measured the length of grass to make sure the whole lawn was even at the beginning, Hank just kept going over the same spot at the end not even touching the middle.
John Redcorn comes with a piece of grass at the end, but it is never shown him giving it to Hank, yet in one shot you see he no longer has any.
In the beginning Kahn points out bad spots in Hank's lawn, but in another view in that same scene the grass all looks the same.
In this episode it seems as though Bobby knows that Dale is not Joseph's real father, however it is never mentioned again.
At the beginning of the episode the ant on Dale's truck is upside down (the way it usually is) but then later is right side up. The position of the ant changes throughout season one. After that it is always upside down. (They actually make fun of this on the DVD commentary)
While Dale doesn't always necessarily know what he's doing, he does pride himself on being able to exterminate things. So, he should be knowledgable enough to know that ants do not sting. They bite. Not only should he have corrected Hank, but, Dale also uses the term, too.
When Hank jumps off of his lawn chair to chase Dale, he has shoes. During the chase, he is barefoot. When the chase is over, his shoes are back on. This first part of the goof is explained by a deleted sequence included on the DVD release of Season 1. In the complete version, it shoes Hank's shoes and socks coming off in the mud. Then Kahn tells Hank to put on his shoes as his feet were sinking in the mud. However it seems apparent that the goof of how his shoes got back on is still relevant.
Hank (after Dale had gotten the swarm of fireants off Bobby, and is now lying in the street): You sacrificed your life to save my son. I guess that makes us even for you ruining my lawn. What am I saying? Of course it makes us even.
Dale: While I was blacked out was anything inserted into me?
Hank: You're alive?
Dale: Answer the question.
Dale: If all you're going on is my confession, forget it. I'm simply not credible.
Hank: It's not fair! She was so young and green. I never even got a chance to mow her.
Peggy: Oh, it'll be okay, Hank. You will grow a new lawn by next year's cinco de mayo.
Hank: I can't go through this again. From now on, wood chips and gravel.
Peggy: Now, you do not mean that.
Boomhauer: That dang ol' ashes to ashes.
Bill: You think that's enough? I figure I could top it off with some lighter fluid or something.
Hank: Whoa, Bill, you don't want to be mixing and matching your petrochemicals. The propane association ..
Dale: It'll be fine, Bill. Burn is burn.
Bill: I got to remember that.
Hank: I'm telling you, that's dangerous. Propane is what I know best.
Dale: Well, it sure ain't lawns.
Hank: Oh, no! An anthill on my new lawn!
Dale: Oh, so that's what that is.
Hank: How did I get fire ants?
Dale: I'm only a professional exterminator. I don't know how you get 'em. I only know how you get rid of 'em. Welp, got to go.
Hank: Look, some people hoist a flag to show they love our country. Well, my lawn is my flag. It tells the world: Here lives a competent, trustworthy salesman of propane and propane accessories. Without my lawn, I am Bill. Do you want to be married to Bill?
Peggy: Well, mister, you have just installed the finest lawn on the block.
Bobby: That chubby ant reminds me of me.
Joseph: That's the queen, stupid! Like the one on top of my dad's truck.
Bobby: You mean Dale Gribble's truck?
Joseph: Yeah my dad's truck.
Kahn: Hank Hill! Somebody steal TV Guide out of mailbox! At first I think it Bill. But then I think, can Bill read?
(On the phone)
Peg: Bethany, it does not matter if your ava-cay-does are hard! LIFE is hard! You can not make authentic guay-ca-mol out of lima beans and ritz crackers!
(Hangs up the phone)
Peg: Oh, these people! Gringos.
Peggy: (aggitated) Come on out to the Cinco De Mayo festivities , and have one of my famous 'Marrrrr-garrrrr-eeeeetahs, before Bill drinks them all.
Hank: (Highly irritated now) It is 'Margarita's', NOT 'Marrrrr-garrrrr-eeeeetahs'
This episode and "Plastic White Female" were switched on the Season 1 DVD because it was done in production order.
When Boomhauer gives Hank his piece of sod, he proclaims that Hank is the richest man in the world, "Just like dang ol' Jimmy...yo." The "Jimmy" that he references is most likely Jimmy Stewart, who portrays George Bailey in It's a Wonderful Life. At the end of that movie, all of George's friends come together and give him donations, and George is proclaimed "the richest man in town."
Dale: That's how they killed L. Ron Hubbard.
Lafayette Ron Hubbard was the science fiction writer who founded the controversial Church of Scientology. He wasn't really killed by fire ants as Dale suggests. He died of complications from a stroke.