OPINION BY
¶'1 The Commonwealth appeals from the trial court order denying its motion for reconsideration of the sentence imposed on Appellee, Cheryl M. Raybuck, following her conviction for two counts of aggravated assault. Specifically, the Commonwealth asks us to determine whether the trial court erred by not applying the deadly weapons enhancement
¶ 2 The facts and procedural history underlying this matter are as follows. Ap-pellee was charged with two counts of aggravated assault and other offenses in connection with the attempted poisoning of her husband.
¶ 3 The Commonwealth then filed a timely motion for reconsideration of sentence based on the trial court’s failure to apply the deadly weapons enhancement, as provided under 204 Pa.Code § 303.10(a)(1)(iii). After the trial court denied the motion for reconsideration, the Commonwealth filed a timely appeal and raises the following single issue for our review:
Is the Trial Court mandated to apply the deadly weapons enhancement set forth in the sentencing code on a plea of guilty to two counts of aggravated assault where poison and toxic gas were the instrumentalities] used in the commission of the crime[?]
(Commonwealth’s Statement of Question Involved).
¶ 4 An allegation that the trial court erred by not applying the deadly weapons enhancement is a challenge to the discretionary aspects of sentence, from which there is no appeal as of right. See, e.g., Commonwealth v. Pennington,
¶ 5 Our case law has established that application of the deadly weapons enhancement presents a substantial question. See id. at 216 (concluding that the appellant raised a substantial question by challenging the trial court’s application of the deadly weapons enhancement, based on the appellant’s assertion that he had not had actual possession of the deadly weapon, a gun); Commonwealth v. Hatcher,
Sentencing is a matter vested in the sound discretion of the sentencing judge, and a sentence will not be disturbed on appeal absent a manifest abuse of discretion. In this context, an abuse of discretion is not shown merely by an error in judgment. Rather, the appellant must establish, by reference to the record, that the sentencing court ignored or misapplied the law, exercised its judgment for reasons of partiality, prejudice, bias or ill will, or arrived at a manifestly unreasonable decision.
Commonwealth v. Fullin,
¶ 7 The deadly weapons enhancement provision of the sentencing guidelines provides, in relevant part, as follows:
When the court determines that the offender possessed a deadly weapon during the commission of the current conviction offense, the court shall consider the DWE/Possessed Matrix (§ 303.17). An offender has possessed a deadly weapon if any of the following were on the offender’s person or within his immediate physical control:
(i) Any firearm, (as defined in 42 Pa. C.S. § 9712) whether loaded or unloaded, or
(ii) Any dangerous weapon (as defined in 18 Pa.C.S. § 913), or
(in) Any device, implement, or instrumentality designed as a weapon or capable of producing death or serious bodily injury where the court determines that the defendant intended to use the weapon to threaten or injure another individual.
204 Pa.Code § 303.10(a)(1)(iii).
¶ 8 In considering the applicability of the deadly weapon enhancement in a particular case, we look for guidance to our case law. Not surprisingly, guns, knives, and other clearly offensive weapons constitute the most obvious and commonly encountered forms of deadly weapons. See Pennington,
¶ 9 Similarly, this Court has held that a fireplace poker and a dry-wall saw were deadly weapons under certain circumstances. Commonwealth v. Cornish,
¶ 10 The sentencing court has no discretion to refuse to apply the deadly weapons enhancement when it is appropriate. Magnum,
¶ 11 We turn now to the facts and circumstances of the case sub judice, addressing first whether commercial mouse poison as used by Appellee is a deadly weapon. For mouse poison to be classified as a deadly weapon, it must be an “instrumentality ... capable of producing death or serious bodily injury where the court determines that the defendant intended to use the weapon to threaten or injure another individual.” 204 Pa.Code § 303.10(a)(1)(iii). We conclude that mouse poison, as used by Appellee herein, is encompassed by this provision.
¶ 12 Mouse poison is clearly an instrumentality, the broad definition of which is a “thing used to achieve an end or purpose.” Black’s Law Dictionary, 8th ed., 2004. Mouse poison is used to kill rodents. Instantly, it became a deadly weapon when Appellee included it in the sandwich that she prepared for her husband to consume, in light of her admitted intent to poison him. See Scullin,
¶ 13 That the amount of poison Appellee added to the sandwich was apparently insufficient to actually cause serious bodily injury is irrelevant to our conclusion that mouse poison is a deadly weapon under the circumstances of this case. By design and normal usage, mouse poison kills rodents, and thus by its very nature it is toxic and dangerous. Appellee attempted to exploit this characteristic in order to poison her husband. It is not necessary for the court to venture into calculations of the amount of mouse poison that the victim would have had to ingest to produce the injurious effect intended by Appellee in order for the deadly weapons enhancement to apply. We base this conclusion upon our interpretation of the entire text of 204 Pa.Code § 303.10(a), which provides in subsection (i) that a firearm is classified as a deadly weapon, whether loaded or unloaded. 204 Pa.Code § 303.10(a)(i) (emphasis added). By analogy, we conclude that commercial mouse poison is a deadly weapon under subsection (iii), whether or not it is used in an amount actually capable of causing serious bodily injury or death.
¶ 14 Finally, we turn to the question of whether unidentified household chemicals can be considered a deadly weapon. The second charge of aggravated assault, to which Appellee pled nolo contendere, stemmed from her attempt to manufacture a poisonous gas by pouring household chemicals down the bathtub drain. However, not a scintilla of evidence was offered as to the identity or nature of the chemicals Appellee used. “Household chemicals” comprises a large, broad, and diverse category with little or no commonality except for the common presence and usage of these products in the home. In
¶ 15 In summary, we conclude that the trial court erred as a matter of law by not including the deadly weapons enhancement when calculating Appellee’s sentence for aggravated assault involving the use of mouse poison. However, we affirm the trial court’s refusal to consider unknown household chemicals as a deadly weapon. Thus, we affirm in part and reverse in part and remand for reconsideration of sentence.
¶ 16 Sentence affirmed in part, reversed in part, and remanded for resentencing. Jurisdiction relinquished.
Notes
. 204 Pa.Code § 303.10(a)(1)(iii).
. Aggravated assault is defined, in relevant part, as follows:
A person is guilty of aggravated assault if he:
(1) attempts to cause serious bodily injury to another, or causes such injury intentionally, knowingly or recklessly under circumstances manifesting extreme indifference to the value of human life[.]
18 Pa.C.S.A. 2702(a)(1). Appellee was also charged with attempted murder and recklessly endangering another person, but these charges were nolle prossed.
. The Commonwealth has not included a statement of the reasons relied upon for allowance of appeal, as required by Pa.R.A.P. 2119(f). However, because Appellee has failed to object to this omission and a substantial question is obvious from the Common
